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Spin-entanglement between two freely propagating electrons: Experiment and theory (2017)

D. Vasilyev, F. O. Schumann, F. Giebels, H. Gollisch, J. Kirschner, and R. Feder

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-03-18

Beschreibung: Author(s): D. Vasilyev, F. O. Schumann, F. Giebels, H. Gollisch, J. Kirschner, and R. Feder Here, the authors make connection to the foundation of quantum mechanics. As stated by Schrquotodinger, entanglement is “the characteristic trait of quantum mechanics” and seemingly at odds with the description of nature. In this joint experimental and theoretical work, the authors discuss the possibility of spin entanglement of two freely propagating electrons. These have been created by a collision of a spin-polarized primary electron with the Shockley surface state of the Cu(111) surface. The contribution of this state can clearly be identified in the experiment and allows use of its particular features. The electron scattering study done here resembles the scenario envisioned by the seminal works of Einstein-Podolsky-Rosen and Schrquotodinger to work out the peculiar nature of entanglement. [Phys. Rev. B 95, 115134] Published Fri Mar 17, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

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Thema: Physik

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Fano stability diagram of a symmetric triple quantum dot (2017)

Michael Niklas, Andreas Trottmann, Andrea Donarini, and Milena Grifoni

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-03-18

Beschreibung: Author(s): Michael Niklas, Andreas Trottmann, Andrea Donarini, and Milena Grifoni The Fano factor stability diagram of a C 3 v symmetric triangular quantum dot is analyzed for increasing electron fillings N . At low filling, conventional Poissonian and sub-Poissonian behavior is found. At larger filling, N ≥ 2 , a breaking of the electron-hole symmetry is manifested in super-Poissonian… [Phys. Rev. B 95, 115133] Published Fri Mar 17, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Magnetic properties of the S=1/2 honeycomb lattice antiferromagnet 2−Cl−3,6−F_{2} −V (2017)

Toshiki Okabe, Hironori Yamaguchi, Shunichiro Kittaka, Toshiro Sakakibara, Toshio Ono, and Yuko Hosokoshi

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-02-14

Beschreibung: Author(s): Toshiki Okabe, Hironori Yamaguchi, Shunichiro Kittaka, Toshiro Sakakibara, Toshio Ono, and Yuko Hosokoshi We successfully synthesized single crystals of the verdazyl radical 2 − Cl − 3 , 6 − F 2 − V [=3-(2-chloro-3,6-difluorophenyl)-1,5-diphenylverdazyl], which is a rare model compound with an S = 1 2 Heisenberg antiferromagnetic (HAF) honeycomb lattice. Ab initio molecular orbital calculations indicate two dominant … [Phys. Rev. B 95, 075120] Published Mon Feb 13, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Longitudinal fluctuations in the Berezinskii-Kosterlitz-Thouless phase (2017)

Pawel Jakubczyk and Walter Metzner

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-02-14

Beschreibung: Author(s): Pawel Jakubczyk and Walter Metzner We analyze the interplay of longitudinal and transverse thermal fluctuations in a U ( 1 ) symmetric two-dimensional ϕ 4 theory. Toward this end, we derive coupled renormalization-group equations for both types of fluctuations obtained from a linear (Cartesian) decomposition of the order-parameter field.… [Phys. Rev. B 95, 085113] Published Thu Feb 09, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Interactions of hydrogen with amorphous hafnium oxide (2017)

Moloud Kaviani, Valeri V. Afanas'ev, and Alexander L. Shluger

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-02-14

Beschreibung: Author(s): Moloud Kaviani, Valeri V. Afanas'ev, and Alexander L. Shluger We used density functional theory (DFT) calculations to study the interaction of hydrogen with amorphous hafnia ( a − HfO 2 ) using a hybrid exchange-correlation functional. Injection of atomic hydrogen, its diffusion towards electrodes, and ionization can be seen as key processes underlying charge inst… [Phys. Rev. B 95, 075117] Published Wed Feb 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Quantum oscillations from inside the Fermi sea (2017)

Hridis K. Pal

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-02-14

Beschreibung: Author(s): Hridis K. Pal Quantum oscillations are conventionally understood to arise from the Fermi level; hence, they are considered to be a proof of the existence of an underlying Fermi surface. In this article we show that in certain situations quantum oscillations can also arise from inside the Fermi sea. We establish t… [Phys. Rev. B 95, 085111] Published Wed Feb 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Strong correlations and the search for high-T_{c} superconductivity in chromium pnictides and chalcogenides (2017)

J. M. Pizarro, M. J. Calderón, J. Liu, M. C. Muñoz, and E. Bascones

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-02-14

Beschreibung: Author(s): J. M. Pizarro, M. J. Calderón, J. Liu, M. C. Muñoz, and E. Bascones Undoped iron superconductors accommodate n = 6 electrons in five d orbitals. Experimental and theoretical evidence shows that the strength of correlations increases with hole doping, as the electronic filling approaches half filling with n = 5 electrons. This evidence delineates a scenario in which the … [Phys. Rev. B 95, 075115] Published Tue Feb 07, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Metal-catalyzed electrochemical diazidation of alkenes (2017)

Fu, N., Sauer, G. S., Saha, A., Loo, A., Lin, S.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2017-08-11

Beschreibung: Vicinal diamines are a common structural motif in bioactive natural products, therapeutic agents, and molecular catalysts, motivating the continuing development of efficient, selective, and sustainable technologies for their preparation. We report an operationally simple and environmentally friendly protocol that converts alkenes and sodium azide—both readily available feedstocks—to 1,2-diazides. Powered by electricity and catalyzed by Earth-abundant manganese, this transformation proceeds under mild conditions and exhibits exceptional substrate generality and functional group compatibility. Using standard protocols, the resultant 1,2-diazides can be smoothly reduced to vicinal diamines in a single step, with high chemoselectivity. Mechanistic studies are consistent with metal-mediated azidyl radical transfer as the predominant pathway, enabling dual carbon-nitrogen bond formation.

Schlagwort(e): Chemistry

Print ISSN: 0036-8075

Digitale ISSN: 1095-9203

Thema: Biologie , Chemie und Pharmazie , Geologie und Paläontologie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

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9

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Photogalvanic effect in Weyl semimetals (2017)

E. J. König, H.-Y. Xie, D. A. Pesin, and A. Levchenko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): E. J. König, H.-Y. Xie, D. A. Pesin, and A. Levchenko We theoretically study the impact of impurities on the photogalvanic effect (PGE) in Weyl semimetals with weakly tilted Weyl cones. Our calculations are based on a two-nodes model with an inversion symmetry breaking offset and we employ a kinetic equation approach in which both optical transitions a... [Phys. Rev. B 96, 075123] Published Fri Aug 11, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Spin-pairing correlations and spin polarization of Majorana bound states in two-dimensional topological-insulator systems (2017)

Kunhua Zhang, Junjie Zeng, Yafei Ren, and Zhenhua Qiao

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Kunhua Zhang, Junjie Zeng, Yafei Ren, and Zhenhua Qiao We demonstrate that a zero-energy Majorana bound state in a ferromagnetic insulator (FI)-superconductor (SC) junction formed on the edge of a two-dimensional topological insulator exhibits three types of spin-triplet pairing correlations, its spin-polarization direction is position independent in a ... [Phys. Rev. B 96, 085117] Published Fri Aug 11, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Filling-enforced nonsymmorphic Kondo semimetals in two dimensions (2017)

J. H. Pixley, Sung; Bin Lee, B. Brandom, and S. A. Parameswaran

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): J. H. Pixley, SungBin Lee, B. Brandom, and S. A. Parameswaran We study the competition between Kondo screening and frustrated magnetism on the nonsymmorphic Shastry-Sutherland Kondo lattice at a filling of two conduction electrons per unit cell. This model is known to host a set of gapless partially Kondo screened phases intermediate between the Kondo-destroye... [Phys. Rev. B 96, 081105(R)] Published Fri Aug 11, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Electronic bands and optical conductivity of the Dzyaloshinsky-Moriya multiferroic ${\mathrm{Ba}}_{2}{\mathrm{CuGe}}_{2}{\mathrm{O}}_{7}$ (2017)

M. Corasaniti, P. Barone, A. Nucara, M. Ortolani, L. Baldassarre, R. Fittipaldi, V. Granata, L. Rocco, A. Vecchione, W. S. Mohamed, J. Lorenzana, and P. Calvani

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): M. Corasaniti, P. Barone, A. Nucara, M. Ortolani, L. Baldassarre, R. Fittipaldi, V. Granata, L. Rocco, A. Vecchione, W. S. Mohamed, J. Lorenzana, and P. Calvani We have measured the reflectivity in the a b plane and along the c axis of a single crystal of the Dzyaloshinsky-Moriya multiferroic Ba 2 CuGe 2 O 7 , from 20 to 300 K and from 700 to 24 000 cm − 1 . The resulting optical conductivity σ ( ω ) has been compared with the results of calculations of its electronic b... [Phys. Rev. B 96, 085115] Published Thu Aug 10, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Metal-insulator transition in the dimerized organic conductor $κ−(\text{BEDT-TTF}{)}_{2}\mathrm{Hg}(\mathrm{SCN}{)}_{2}\mathrm{Br}$ (2017)

Tomislav Ivek, Rebecca Beyer, Sabuhi Badalov, Matija Čulo, Silvia Tomić, John A. Schlueter, Elena I. Zhilyaeva, Rimma N. Lyubovskaya, and Martin Dressel

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Tomislav Ivek, Rebecca Beyer, Sabuhi Badalov, Matija Čulo, Silvia Tomić, John A. Schlueter, Elena I. Zhilyaeva, Rimma N. Lyubovskaya, and Martin Dressel The organic charge-transfer salt κ − ( BEDT-TTF ) 2 Hg ( SCN ) 2 Br is a quasi-two-dimensional metal with a half-filled conduction band at ambient conditions. When cooled below T = 80 K , it undergoes a pronounced transition to an insulating phase where the resistivity increases many orders of magnitude. In order ... [Phys. Rev. B 96, 085116] Published Thu Aug 10, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Global phase diagram and quantum spin liquids in a spin-$\frac{1}{2}$ triangular antiferromagnet (2017)

Shou-Shu Gong, W. Zhu, J.-X. Zhu, D. N. Sheng, and Kun Yang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Shou-Shu Gong, W. Zhu, J.-X. Zhu, D. N. Sheng, and Kun Yang We study the spin- 1 / 2 Heisenberg model on the triangular lattice with the nearest-neighbor J 1 〉 0 , the next-nearest-neighobr J 2 〉 0 Heisenberg interactions, and the additional scalar chiral interaction J χ ( S ⃗ i × S ⃗ j ) · S ⃗ k for the three spins in all the triangles using large-scale density matrix renorm... [Phys. Rev. B 96, 075116] Published Wed Aug 09, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Theory of quantum oscillations of magnetization in Kondo insulators (2017)

Panch Ram and Brijesh Kumar

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Panch Ram and Brijesh Kumar The Kondo lattice model of spin-1/2 local moments coupled to the conduction electrons at half filling is studied for its orbital response to magnetic field on bipartite lattices. Through an effective charge dynamics, in a canonical representation of electrons that appropriately describes the Kondo i... [Phys. Rev. B 96, 075115] Published Wed Aug 09, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Detection and characterization of symmetry-broken long-range orders in the spin-$\frac{1}{2}$ triangular Heisenberg model (2017)

S. N. Saadatmand and I. P. McCulloch

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): S. N. Saadatmand and I. P. McCulloch We present new numerical tools to analyze symmetry-broken phases in the context of SU ( 2 ) -symmetric translation-invariant matrix product states (MPS) and density-matrix renormalization-group (DMRG) methods for infinite cylinders, and determine the phase diagram of the geometrically frustrated triangu... [Phys. Rev. B 96, 075117] Published Wed Aug 09, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Mobility edges in one-dimensional bichromatic incommensurate potentials (2017)

Xiao Li, Xiaopeng Li, and S. Das Sarma

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): Xiao Li, Xiaopeng Li, and S. Das Sarma We theoretically study a one-dimensional (1D) mutually incommensurate bichromatic lattice system, which has been implemented in ultracold atoms to study quantum localization. It has been universally believed that the tight-binding version of this bichromatic incommensurate system is represented by t... [Phys. Rev. B 96, 085119] Published Mon Aug 14, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Magnetic field dependent dynamics and field-driven metal-to-insulator transition of the half-filled Hubbard model: A DMFT+DMRG study (2017)

W. Zhu, D. N. Sheng, and Jian-Xin Zhu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): W. Zhu, D. N. Sheng, and Jian-Xin Zhu We study the magnetic field-driven metal-to-insulator transition in half-filled Hubbard model on the Bethe lattice, using the dynamical mean-field theory by solving the quantum impurity problem with density-matrix renormalization group algorithm. The method enables us to obtain a high-resolution spe... [Phys. Rev. B 96, 085118] Published Mon Aug 14, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Protected ground states in short chains of coupled spins in circuit quantum electrodynamics (2017)

Adam Callison, Eytan Grosfeld, and Eran Ginossar

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-16

Beschreibung: Author(s): Adam Callison, Eytan Grosfeld, and Eran Ginossar The two degenerate ground states of the anisotropic Heisenberg ( X Y ) spin model of a chain of qubits (pseudospins) can encode quantum information, but their degree of protection against local perturbations is known to be only partial. We examine the properties of the system in the presence of nonloca... [Phys. Rev. B 96, 085121] Published Tue Aug 15, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Playing marble run to make methane (2017)

Dobbek, H.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2017-08-18

Schlagwort(e): Chemistry

Print ISSN: 0036-8075

Digitale ISSN: 1095-9203

Thema: Biologie , Chemie und Pharmazie , Geologie und Paläontologie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

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Methanogenic archaea metabolism (2017)

Vinson, V.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2017-08-18

Schlagwort(e): Chemistry

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Thema: Biologie , Chemie und Pharmazie , Geologie und Paläontologie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

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Methanogenic heterodisulfide reductase (HdrABC-MvhAGD) uses two noncubane [4Fe-4S] clusters for reduction (2017)

Wagner, T., Koch, J., Ermler, U., Shima, S.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2017-08-18

Beschreibung: In methanogenic archaea, the carbon dioxide (CO 2 ) fixation and methane-forming steps are linked through the heterodisulfide reductase (HdrABC)–[NiFe]-hydrogenase (MvhAGD) complex that uses flavin-based electron bifurcation to reduce ferredoxin and the heterodisulfide of coenzymes M and B. Here, we present the structure of the native heterododecameric HdrABC-MvhAGD complex at 2.15-angstrom resolution. HdrB contains two noncubane [4Fe-4S] clusters composed of fused [3Fe-4S]-[2Fe-2S] units sharing 1 iron (Fe) and 1 sulfur (S), which were coordinated at the CCG motifs. Soaking experiments showed that the heterodisulfide is clamped between the two noncubane [4Fe-4S] clusters and homolytically cleaved, forming coenzyme M and B bound to each iron. Coenzymes are consecutively released upon one-by-one electron transfer. The HdrABC-MvhAGD atomic model serves as a structural template for numerous HdrABC homologs involved in diverse microbial metabolic pathways.

Schlagwort(e): Chemistry

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Thema: Biologie , Chemie und Pharmazie , Geologie und Paläontologie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

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Pressure-induced spin-state transition of iron in magnesiowüstite (Fe,Mg)O (2017)

I. Leonov, A. V. Ponomareva, R. Nazarov, and I. A. Abrikosov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-23

Beschreibung: Author(s): I. Leonov, A. V. Ponomareva, R. Nazarov, and I. A. Abrikosov We present a detailed theoretical study of the electronic, magnetic, and structural properties of magnesiowüstite Fe 1 − x Mg x O with x in the range between 0 and 0.875 using a fully charge self-consistent implementation of the density functional theory plus dynamical mean-field theory method. In particu... [Phys. Rev. B 96, 075136] Published Thu Aug 17, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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A water window on surface chemistry (2017)

Hunger, J., Parekh, S. H.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2017-08-25

Schlagwort(e): Chemistry

Print ISSN: 0036-8075

Digitale ISSN: 1095-9203

Thema: Biologie , Chemie und Pharmazie , Geologie und Paläontologie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

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$2π$-flux loop semimetals (2017)

Linhu Li, Stefano Chesi, Chuanhao Yin, and Shu Chen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-29

Beschreibung: Author(s): Linhu Li, Stefano Chesi, Chuanhao Yin, and Shu Chen We introduce a model of 2 π -flux loop semimetals which holds nodal loops described by a winding number ν = 2 . By adding some extra terms, this model can be transformed into a recently discovered Hopf-link semimetal, and the symmetries distinguishing these two types of semimetals are studied. We also pr... [Phys. Rev. B 96, 081116(R)] Published Mon Aug 28, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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Gate tunable spin-orbit coupling and weak antilocalization effect in an epitaxial $\mathrm{L}{\mathrm{a}}_{2/3}\mathrm{S}{\mathrm{r}}_{1/3}\mathrm{Mn}{\mathrm{O}}_{3}$ thin film (2017)

Shao-Pin Chiu, Michihiko Yamanouchi, Tatsuro Oyamada, Hiromichi Ohta, and Juhn-Jong Lin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-29

Beschreibung: Author(s): Shao-Pin Chiu, Michihiko Yamanouchi, Tatsuro Oyamada, Hiromichi Ohta, and Juhn-Jong Lin Epitaxial L a 2 / 3 S r 1 / 3 Mn O 3 (LSMO) films have been grown on SrTi O 3 (001) substrates via pulsed laser deposition. In a 22-nm-thick LSMO film with a low residual resistivity of ρ 0 ≈ 59 μ Ω cm , we found a zero-field dip in the magnetoresistance (MR) below 10 K, manifesting the weak antilocalization (WAL) effec... [Phys. Rev. B 96, 085143] Published Mon Aug 28, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Long-lived nonthermal electron distribution in aluminum excited by femtosecond extreme ultraviolet radiation (2017)

Francesco Bisio, Emiliano Principi, Michele Magnozzi, Alberto Simoncig, Erika Giangrisostomi, Riccardo Mincigrucci, Luca Pasquali, Claudio Masciovecchio, Federico Boscherini, and Maurizio Canepa

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Francesco Bisio, Emiliano Principi, Michele Magnozzi, Alberto Simoncig, Erika Giangrisostomi, Riccardo Mincigrucci, Luca Pasquali, Claudio Masciovecchio, Federico Boscherini, and Maurizio Canepa We report a time-resolved study of the relaxation dynamics of Al films excited by ultrashort intense free-electron laser (FEL) extreme ultraviolet pulses. The system response was measured through a pump-probe detection scheme, in which an intense FEL pulse tuned around the Al L 2 , 3 edge (72.5 eV) act... [Phys. Rev. B 96, 081119(R)] Published Wed Aug 30, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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On the possibility to detect multipolar order in ${\mathrm{URu}}_{2}{\mathrm{Si}}_{2}$ by the electric quadrupolar transition of resonant elastic x-ray scattering (2017)

Y. L. Wang, G. Fabbris, D. Meyers, N. H. Sung, R. E. Baumbach, E. D. Bauer, P. J. Ryan, J.-W. Kim, X. Liu, M. P. M. Dean, G. Kotliar, and X. Dai

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Y. L. Wang, G. Fabbris, D. Meyers, N. H. Sung, R. E. Baumbach, E. D. Bauer, P. J. Ryan, J.-W. Kim, X. Liu, M. P. M. Dean, G. Kotliar, and X. Dai Resonant elastic x-ray scattering is a powerful technique for measuring multipolar order parameters. In this paper, we theoretically and experimentally study the possibility of using this technique to detect the proposed multipolar order parameters in URu 2 Si 2 at the U- L 3 edge with the electric quadr... [Phys. Rev. B 96, 085146] Published Wed Aug 30, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Classical spin spirals in frustrated magnets from free-fermion band topology (2017)

Jan Attig and Simon Trebst

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Jan Attig and Simon Trebst In frustrated magnets, competing interactions give rise to many nearly degenerate low-energy states. For classical Heisenberg antiferromagnets the spin spiral ground states form a degenerate manifold in momentum space that, somewhat unexpectedly, looks like a Fermi surface. Here, the authors demonstrate an exact classical-to-quantum correspondence that allows one to map the spin spiral surfaces of classical spin systems to the Fermi surfaces of free-fermion models. [Phys. Rev. B 96, 085145] Published Wed Aug 30, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Origin of the extremely large magnetoresistance in the semimetal YSb (2017)

J. Xu, N. J. Ghimire, J. S. Jiang, Z. L. Xiao, A. S. Botana, Y. L. Wang, Y. Hao, J. E. Pearson, and W. K. Kwok

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): J. Xu, N. J. Ghimire, J. S. Jiang, Z. L. Xiao, A. S. Botana, Y. L. Wang, Y. Hao, J. E. Pearson, and W. K. Kwok Electron-hole ( e − h ) compensation is a hallmark of multiband semimetals with extremely large magnetoresistance (XMR) and has been considered to be the basis for XMR. Recent spectroscopic experiments, however, reveal that YSb with nonsaturating magnetoresistance is uncompensated, questioning the e − h c... [Phys. Rev. B 96, 075159] Published Tue Aug 29, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Ballistic transport in the one-dimensional Hubbard model: The hydrodynamic approach (2017)

Enej Ilievski and Jacopo De Nardis

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Enej Ilievski and Jacopo De Nardis We outline a general formalism of hydrodynamics for quantum systems with multiple particle species which undergo completely elastic scattering. In the thermodynamic limit, the complete kinematic data of the problem consist of the particle content, the dispersion relations, and a universal dressing t... [Phys. Rev. B 96, 081118(R)] Published Tue Aug 29, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Magnetic correlations in the two-dimensional repulsive Fermi-Hubbard model (2017)

Fedor Šimkovic, IV, Youjin Deng, N. V. Prokof'ev, B. V. Svistunov, I. S. Tupitsyn, and Evgeny Kozik

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): Fedor Šimkovic, IV, Youjin Deng, N. V. Prokof'ev, B. V. Svistunov, I. S. Tupitsyn, and Evgeny Kozik The repulsive Fermi-Hubbard model on a square lattice has a rich phase diagram near half-filling ( n = 1 ): at n = 1 the ground state is an antiferromagnetic insulator, at 0.6 〈 n ≲ 0.8 the ground state is a d x 2 − y 2 -wave superfluid (at least for moderately strong interactions, U ≲ 4 ), and the region 1 − n ≪ 1 is ... [Phys. Rev. B 96, 081117(R)] Published Tue Aug 29, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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X-ray vision spies copper on the move (2017)

Yeston, J.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2017-09-01

Schlagwort(e): Chemistry

Print ISSN: 0036-8075

Digitale ISSN: 1095-9203

Thema: Biologie , Chemie und Pharmazie , Geologie und Paläontologie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

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Finite-temperature screening of $U$(1) fractons (2017)

Michael Pretko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-06

Beschreibung: Author(s): Michael Pretko We investigate the finite-temperature screening behavior of three-dimensional U ( 1 ) spin-liquid phases with fracton excitations. Several features are shared with the conventional U ( 1 ) spin liquid. The system can exhibit spin-liquid physics over macroscopic length scales at low temperatures, but scree... [Phys. Rev. B 96, 115102] Published Tue Sep 05, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Isosbestic points in doped $\mathrm{Sm}{\mathrm{B}}_{6}$ as features of universality and property tuning (2017)

Mat. Orendáč, S. Gabáni, G. Pristáš, E. Gažo, P. Diko, P. Farkašovský, A. Levchenko, N. Shitsevalova, and K. Flachbart

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-06

Beschreibung: Author(s): Mat. Orendáč, S. Gabáni, G. Pristáš, E. Gažo, P. Diko, P. Farkašovský, A. Levchenko, N. Shitsevalova, and K. Flachbart Recent theoretical models and experiments suggest that Sm B 6 is a topological Kondo insulator. Here we report on heat capacity C ( T ) investigations of three single-crystalline Sm B 6 samples having different quality, of Sm B 6 single crystals doped with various concentration of trivalent lanthanum ions ( S ... [Phys. Rev. B 96, 115101] Published Tue Sep 05, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Orbital selectivity causing anisotropy and particle-hole asymmetry in the charge density wave gap of $2H\text{−}{\mathrm{TaS}}_{2}$ (2017)

J. Zhao, K. Wijayaratne, A. Butler, J. Yang, C. D. Malliakas, D. Y. Chung, D. Louca, M. G. Kanatzidis, J. van Wezel, and U. Chatterjee

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-06

Beschreibung: Author(s): J. Zhao, K. Wijayaratne, A. Butler, J. Yang, C. D. Malliakas, D. Y. Chung, D. Louca, M. G. Kanatzidis, J. van Wezel, and U. Chatterjee We report an in-depth angle-resolved photoemission spectroscopy study on 2 H − TaS 2 , a canonical incommensurate charge density wave (CDW) system. This study demonstrates that just as in related incommensurate CDW systems, 2 H − TaSe 2 and 2 H − NbSe 2 , the energy gap ( Δ CDW ) of 2 H − TaS 2 is localized along the K -... [Phys. Rev. B 96, 125103] Published Tue Sep 05, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Boundary conformal field theory and symmetry-protected topological phases in $2+1$ dimensions (2017)

Bo Han, Apoorv Tiwari, Chang-Tse Hsieh, and Shinsei Ryu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-06

Beschreibung: Author(s): Bo Han, Apoorv Tiwari, Chang-Tse Hsieh, and Shinsei Ryu We propose a diagnostic tool for detecting nontrivial symmetry-protected topological (SPT) phases protected by a symmetry group G in 2 + 1 dimensions. Our method is based on directly studying the 1 + 1 -dimensional anomalous edge conformal field theory (CFT) of SPT phases. We claim that if the CFT is the... [Phys. Rev. B 96, 125105] Published Tue Sep 05, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Semimetallic behavior in Heusler-type ${\mathrm{Ru}}_{2}\mathrm{TaAl}$ and thermoelectric performance improved by off-stoichiometry (2017)

C. W. Tseng, C. N. Kuo, H. W. Lee, K. F. Chen, R. C. Huang, C.-M. Wei, Y. K. Kuo, and C. S. Lue

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-06

Beschreibung: Author(s): C. W. Tseng, C. N. Kuo, H. W. Lee, K. F. Chen, R. C. Huang, C.-M. Wei, Y. K. Kuo, and C. S. Lue We report a study of the temperature-dependent electrical resistivity, Seebeck coefficient, thermal conductivity, specific heat, and Al 27 nuclear magnetic resonance (NMR) in Heusler-type Ru 2 TaAl , to shed light on its semimetallic behavior. While the temperature dependence of the electrical resistivi... [Phys. Rev. B 96, 125106] Published Tue Sep 05, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Thermoelectric properties of a strongly correlated layer (2017)

Irakli Titvinidze, Antonius Dorda, Wolfgang von der Linden, and Enrico Arrigoni

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-06

Beschreibung: Author(s): Irakli Titvinidze, Antonius Dorda, Wolfgang von der Linden, and Enrico Arrigoni In this paper we investigate the effect of strong electronic interactions on the thermoelectric properties of a simple generic system, consisting of a single correlated layer sandwiched between two metallic leads. Results will be given for the linear response regime as well as beyond, for which a fu... [Phys. Rev. B 96, 115104] Published Tue Sep 05, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Suppression of electronic correlations by chemical pressure from FeSe to FeS (2017)

P. Reiss, M. D. Watson, T. K. Kim, A. A. Haghighirad, D. N. Woodruff, M. Bruma, S. J. Clarke, and A. I. Coldea

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-06

Beschreibung: Author(s): P. Reiss, M. D. Watson, T. K. Kim, A. A. Haghighirad, D. N. Woodruff, M. Bruma, S. J. Clarke, and A. I. Coldea In iron-based superconductors, the interplay between nematicity, magnetism, and superconductivity is still not fully understood. Experimentally, the isoelectronic series FeSe 1 − x S x provides an ideal playground to tune different electronic ground states and to selectively investigate their mutual interplay. Here, the authors use high-resolution angle-resolved photoemission spectroscopy to compare the electronic structure of different single crystals in the tetragonal phase. They find that in the absence of nematicity and magnetism, the substantial reduction of electronic correlations correlates with the decrease of the superconducting transition temperature from FeSe to FeS. [Phys. Rev. B 96, 121103(R)] Published Tue Sep 05, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Anomalies and entanglement renormalization (2017)

Jacob C. Bridgeman and Dominic J. Williamson

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-06

Beschreibung: Author(s): Jacob C. Bridgeman and Dominic J. Williamson We study 't Hooft anomalies of discrete groups in the framework of (1+1)-dimensional multiscale entanglement renormalization ansatz states on the lattice. Using matrix product operators, general topological restrictions on conformal data are derived. An ansatz class allowing for optimization of MERA... [Phys. Rev. B 96, 125104] Published Tue Sep 05, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Topological nodal-line semimetal in nonsymmorphic $\mathbit{Cmce}$-phase ${\mathbf{Ag}}_{\mathbf{2}}\mathbf{S}$ (2017)

Huaqing Huang, Kyung-Hwan Jin, and Feng Liu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-07

Beschreibung: Author(s): Huaqing Huang, Kyung-Hwan Jin, and Feng Liu Based on first-principles calculations and symmetry analysis, we discovery that the Ag 2 S with C m c e symmetry is a topological nodal-line semimetal in the absence of spin-orbit coupling. A single nodal loop as protected by the glide symmetry exists around the center of the Brillouin zone, dispersing s... [Phys. Rev. B 96, 115106] Published Wed Sep 06, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Entanglement properties of the time-periodic Kitaev chain (2017)

Daniel J. Yates and Aditi Mitra

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-07

Beschreibung: Author(s): Daniel J. Yates and Aditi Mitra The entanglement properties of the time-periodic Kitaev chain with nearest-neighbor and next-nearest-neighbor hopping is studied. The cases of the exact eigenstate of the time-periodic Hamiltonian, referred to as the Floquet ground state (FGS), as well as a physical state obtained from time evolving... [Phys. Rev. B 96, 115108] Published Wed Sep 06, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Basic electronic properties of iron selenide under variation of structural parameters (2017)

Daniel Guterding, Harald O. Jeschke, and Roser Valentí

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-07

Beschreibung: Author(s): Daniel Guterding, Harald O. Jeschke, and Roser Valentí Since the discovery of high-temperature superconductivity in the thin-film FeSe / SrTiO 3 system, iron selenide and its derivates have been intensively scrutinized. Using ab initio density functional theory calculations we review the electronic structures that could be realized in iron selenide if the ... [Phys. Rev. B 96, 125107] Published Wed Sep 06, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Analytical slave-spin mean-field approach to orbital selective Mott insulators (2017)

Yashar Komijani and Gabriel Kotliar

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-08

Beschreibung: Author(s): Yashar Komijani and Gabriel Kotliar We use the slave-spin mean-field approach to study particle-hole symmetric one- and two-band Hubbard models in the presence of Hund's coupling interaction. By analytical analysis of the Hamiltonian, we show that the locking of the two orbitals vs orbital selective Mott transition can be formulated w... [Phys. Rev. B 96, 125111] Published Thu Sep 07, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Cubic Dresselhaus interaction parameter from quantum corrections to the conductivity in the presence of an in-plane magnetic field (2017)

D. C. Marinescu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-08

Beschreibung: Author(s): D. C. Marinescu We evaluate the quantum corrections to the conductivity of a two-dimensional electron system with competing Rashba (R) and linear and cubic Dresselhaus (D) spin-orbit interactions in the presence of an in-plane magnetic field B . Within a perturbative approximation, we investigate the interplay betwe... [Phys. Rev. B 96, 115109] Published Thu Sep 07, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Evidence of antiferromagnetic fluctuation in the unconventional superconductor $λ$-(BETS)${}_{2}{\mathrm{GaCl}}_{4}$ by $^{13}\mathrm{C}$ NMR (2017)

T. Kobayashi and A. Kawamoto

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-09

Beschreibung: Author(s): T. Kobayashi and A. Kawamoto We performed C 13 NMR measurements on the unconventional organic superconductor λ − ( BETS ) 2 GaCl 4 to clarify its electronic properties in the paramagnetic state. We found that the spin-lattice relaxation rate divided by temperature 1 / T 1 T shows Curie-like enhancement above 55 K that arises from an antife... [Phys. Rev. B 96, 125115] Published Fri Sep 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Closure of the Mott gap and formation of a superthermal metal in the Fröhlich-type nonequilibrium polaron Bose-Einstein condensate in $\mathrm{U}{\mathrm{O}}_{2+x}$ (2017)

Steven D. Conradson et al.

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-09

Beschreibung: Author(s): Steven D. Conradson et al. Mixed valence O-doped U O 2 + x and photoexcited U O 2 containing transitory U 3 + and U 5 + host a coherent polaronic quantum phase (CPQP) that exhibits the characteristics of a Fröhlich-type, nonequilibrium, phonon-coupled Bose-Einstein condensate whose stability and coherence are amplified by collective, a... [Phys. Rev. B 96, 125114] Published Fri Sep 08, 2017

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Probing the role of long-range interactions in the dynamics of a long-range Kitaev chain (2017)

Anirban Dutta and Amit Dutta

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Anirban Dutta and Amit Dutta We study the role of long-range interactions (more precisely, the long-range superconducting gap term) on the nonequilibrium dynamics considering a long-range p -wave superconducting chain in which the superconducting term decays with distance between two sites in a power-law fashion characterized by... [Phys. Rev. B 96, 125113] Published Fri Sep 08, 2017

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Exact solutions and topological phase diagram in interacting dimerized Kitaev topological superconductors (2017)

Motohiko Ezawa

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-09

Beschreibung: Author(s): Motohiko Ezawa It was recently shown that an interacting Kitaev topological superconductor model is exactly solvable based on two-step Jordan-Wigner transformations together with one spin rotation. We generalize this model by including the dimerization, which is shown also to be exactly solvable. We analytically d... [Phys. Rev. B 96, 121105(R)] Published Fri Sep 08, 2017

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Antiferromagnetism in the Hubbard model using a cluster slave-spin method (2017)

Wei-Cheng Lee and Ting-Kuo Lee

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-09

Beschreibung: Author(s): Wei-Cheng Lee and Ting-Kuo Lee The cluster slave-spin method is introduced to systematically investigate the solutions of the Hubbard model including the symmetry-broken phases. In this method, the electron operator is factorized into a fermionic spinon describing the physical spin and a slave-spin describing the charge fluctuati... [Phys. Rev. B 96, 115114] Published Fri Sep 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Cu-Sb dumbbell arrangement in the spin-orbital liquid candidate ${\mathrm{Ba}}_{3}{\mathrm{CuSb}}_{2}{\mathrm{O}}_{9}$ (2017)

Michaela Altmeyer, Frederic Mila, Andrew Smerald, and Roser Valentí

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-12

Beschreibung: Author(s): Michaela Altmeyer, Frederic Mila, Andrew Smerald, and Roser Valentí The absence of both spin freezing and of a static Jahn-Teller effect have led to the proposition that Ba 3 CuSb 2 O 9 is a quantum spin-orbital liquid. However, theoretical understanding of the microscopic origin of this behavior has been hampered by a lack of consensus on the lattice structure. Cu ions ... [Phys. Rev. B 96, 115116] Published Mon Sep 11, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Spin and charge excitations in artificial hole- and electron-doped infinite layer cuprate superconductors (2017)

G. Dellea, M. Minola, A. Galdi, D. Di Castro, C. Aruta, N. B. Brookes, C. J. Jia, C. Mazzoli, M. Moretti Sala, B. Moritz, P. Orgiani, D. G. Schlom, A. Tebano, G. Balestrino, L. Braicovich, T. P. Devereaux, L. Maritato, and G. Ghiringhelli

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-12

Beschreibung: Author(s): G. Dellea, M. Minola, A. Galdi, D. Di Castro, C. Aruta, N. B. Brookes, C. J. Jia, C. Mazzoli, M. Moretti Sala, B. Moritz, P. Orgiani, D. G. Schlom, A. Tebano, G. Balestrino, L. Braicovich, T. P. Devereaux, L. Maritato, and G. Ghiringhelli The asymmetry between electron and hole doping in high critical-temperature superconducting (HTS) cuprates is key information for the understanding of Cooper pair formation mechanisms. Despite intensive studies on different cuprates, a comprehensive description of related magnetic and charge excitat... [Phys. Rev. B 96, 115117] Published Mon Sep 11, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Electronic structure of ${\mathrm{ThRu}}_{2}{\mathrm{Si}}_{2}$ studied by angle-resolved photoelectron spectroscopy: Elucidating the contribution of U $5f$ states in ${\mathrm{URu}}_{2}{\mathrm{Si}}_{2}$ (2017)

Shin-ichi Fujimori, Masaaki Kobata, Yukiharu Takeda, Tetsuo Okane, Yuji Saitoh, Atsushi Fujimori, Hiroshi Yamagami, Yuji Matsumoto, Etsuji Yamamoto, Naoyuki Tateiwa, and Yoshinori Haga

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-12

Beschreibung: Author(s): Shin-ichi Fujimori, Masaaki Kobata, Yukiharu Takeda, Tetsuo Okane, Yuji Saitoh, Atsushi Fujimori, Hiroshi Yamagami, Yuji Matsumoto, Etsuji Yamamoto, Naoyuki Tateiwa, and Yoshinori Haga The electronic structure of ThRu 2 Si 2 was studied using angle-resolved photoelectron spectroscopy (ARPES) with incident photon energies of h ν = 655 –745 eV. Detailed band structure and the three-dimensional shapes of Fermi surfaces were derived experimentally, and their characteristic features were most... [Phys. Rev. B 96, 125117] Published Mon Sep 11, 2017

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Perturbative and global anomalies in bosonic analogs of integer quantum Hall and topological insulator phases (2017)

Matthew F. Lapa and Taylor L. Hughes

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-14

Beschreibung: Author(s): Matthew F. Lapa and Taylor L. Hughes We study perturbative and global anomalies at the boundaries of bosonic analogs of integer quantum Hall (BIQH) and topological insulator (BTI) phases using a description of the boundaries of these phases in terms of a nonlinear sigma model (NLSM) with Wess-Zumino term. One of the main results of the... [Phys. Rev. B 96, 115123] Published Wed Sep 13, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Magnetic resonance investigation for a possible antiferromagnetic subphase in ${(\mathrm{TMTTF})}_{2}\mathrm{Br}$ (2017)

Mizue Asada and Toshikazu Nakamura

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-14

Beschreibung: Author(s): Mizue Asada and Toshikazu Nakamura To understand the electronic states on the boundary region between the commensurate antiferromagnetic (II) phase and the incommensurate spin-density-wave phase in the generalized phase diagram for one-dimensional organic conductors, we performed antiferromagnetic resonance (AFMR) and nuclear magneti... [Phys. Rev. B 96, 125120] Published Wed Sep 13, 2017

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Electronic structures of $\mathbf{U}{X}_{3}$ ($X=\mathbf{Al}$, Ga, and In) studied by photoelectron spectroscopy (2017)

Shin-ichi Fujimori, Masaaki Kobata, Yukiharu Takeda, Tetsuo Okane, Yuji Saitoh, Atsushi Fujimori, Hiroshi Yamagami, Yoshinori Haga, Etsuji Yamamoto, and Yoshichika Ōnuki

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-16

Beschreibung: Author(s): Shin-ichi Fujimori, Masaaki Kobata, Yukiharu Takeda, Tetsuo Okane, Yuji Saitoh, Atsushi Fujimori, Hiroshi Yamagami, Yoshinori Haga, Etsuji Yamamoto, and Yoshichika Ōnuki The electronic structures of U X 3 ( X = Al , Ga , and In ) were studied by photoelectron spectroscopy to understand the relationship between their electronic structures and magnetic properties. The band structures and Fermi surfaces of UAl 3 and UGa 3 were revealed experimentally by angle-resolved photoelect... [Phys. Rev. B 96, 115126] Published Fri Sep 15, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Dynamic structure function of some singular Fermi liquids (2017)

Chandra M. Varma

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Chandra M. Varma The density correlations of some singular Fermi liquids with anomalous properties such as resistivity varying linearly with T at low temperatures and a T log T contribution to the entropy and thermopower are expected to be quite different from that in Landau Fermi liquids. A possible statistical mecha... [Phys. Rev. B 96, 075122] Published Fri Aug 11, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Electronic origin of the spin-phonon coupling effect in transition-metal perovskites (2017)

Hongwei Wang, Lixin He, Hong Jiang, Cameron Steele, and Xifan Wu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Hongwei Wang, Lixin He, Hong Jiang, Cameron Steele, and Xifan Wu By applying the Wannier-based extended Kugel-Khomskii model, we carry out first-principles calculations and electronic structure analysis to understand the spin-phonon coupling effect in transition-metal perovskites. We demonstrate the successful application of our approach to SrMnO 3 and BiFeO 3 . We ... [Phys. Rev. B 96, 075121] Published Fri Aug 11, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Quantum oscillations in the anomalous spin density wave state of FeAs (2017)

Daniel J. Campbell, Chris Eckberg, Kefeng Wang, Limin Wang, Halyna Hodovanets, Dave Graf, David Parker, and Johnpierre Paglione

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Daniel J. Campbell, Chris Eckberg, Kefeng Wang, Limin Wang, Halyna Hodovanets, Dave Graf, David Parker, and Johnpierre Paglione The authors succeeded in growing high-quality crystals of binary FeAs, a spin density wave antiferromagnet with similarities to two families of unconventional superconductors. Quantum oscillations were measured in magnetic torque at high fields, making it possible to compare experimental electronic structure to prior density functional theory calculations. The two agree on the multicarrier nature of FeAs in the magnetic state, but diverge in some aspects of the Fermi-surface geometry. The theoretical results have so far been unable to describe the magnetic structure, and the presented experimental data now indicate that that could be due to an incorrect Fermi surface picture. Oscillations analysis also shows enhanced effective masses compared to theory, indicating that electron correlations may have previously been underappreciated in this material. [Phys. Rev. B 96, 075120] Published Thu Aug 10, 2017

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Optical signature of Weyl electronic structures in tantalum pnictides $\mathrm{Ta}Pn$ ($Pn=$ P, As) (2017)

Shin-ichi Kimura, Hiroko Yokoyama, Hiroshi Watanabe, Jörg Sichelschmidt, Vicky Süß, Marcus Schmidt, and Claudia Felser

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Shin-ichi Kimura, Hiroko Yokoyama, Hiroshi Watanabe, Jörg Sichelschmidt, Vicky Süß, Marcus Schmidt, and Claudia Felser To investigate the electronic structure of Weyl semimetals Ta P n ( P n = P, As), optical conductivity [ σ ( ω ) ] spectra are measured over a wide range of photon energies and temperatures, and these measured values are compared with band calculations. Two significant structures can be observed: a bending st... [Phys. Rev. B 96, 075119] Published Thu Aug 10, 2017

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Interaction-induced interlayer charge transfer in the extreme quantum limit (2017)

H. Deng, Y. Liu, I. Jo, L. N. Pfeiffer, K. W. West, K. W. Baldwin, and M. Shayegan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): H. Deng, Y. Liu, I. Jo, L. N. Pfeiffer, K. W. West, K. W. Baldwin, and M. Shayegan An interacting bilayer electron system provides an extended platform to study electron-electron interaction beyond single layers. We report here experiments demonstrating that the layer densities of an asymmetric bilayer electron system oscillate as a function of perpendicular magnetic field that qu... [Phys. Rev. B 96, 081102(R)] Published Tue Aug 08, 2017

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Reducing orbital occupancy in ${\mathrm{VO}}_{2}$ suppresses Mott physics while Peierls distortions persist (2017)

Nicholas F. Quackenbush, Hanjong Paik, Megan E. Holtz, Matthew J. Wahila, Jarrett A. Moyer, Stefan Barthel, Tim O. Wehling, Dario A. Arena, Joseph C. Woicik, David A. Muller, Darrell G. Schlom, and Louis F. J. Piper

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Nicholas F. Quackenbush, Hanjong Paik, Megan E. Holtz, Matthew J. Wahila, Jarrett A. Moyer, Stefan Barthel, Tim O. Wehling, Dario A. Arena, Joseph C. Woicik, David A. Muller, Darrell G. Schlom, and Louis F. J. Piper The characteristics of the cooperative Mott-Peierls metal-insulator transition (MIT) of VO 2 can be altered by employing epitaxial strain. While the most commonly used substrate for this purpose is isostructural rutile TiO 2 , thin films often suffer from interdiffusion of Ti ions near the interface. E... [Phys. Rev. B 96, 081103(R)] Published Tue Aug 08, 2017

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Duality and universal transport in mixed-dimension electrodynamics (2017)

Wei-Han Hsiao and Dam Thanh Son

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): Wei-Han Hsiao and Dam Thanh Son Using the recently conjectured fermion particle-vortex duality, the authors demonstrate that the theory of a single (2+1)-dimensional Dirac fermion coupled to an Abelian gauge field in a (3+1)-dimensional bulk exhibits a strong-weak duality. The duality is a manifestation of the electromagnetic S-duality in the bulk. At the self-dual point, they find several exact relations between transport coefficients, such as conductivity, Hall conductivity, and thermoelectric coefficients. Consequently, the duality provides new constraints on the physics of a strongly interacting system. [Phys. Rev. B 96, 075127] Published Mon Aug 14, 2017

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Topological Kondo insulators in one dimension: Continuous Haldane-type ground-state evolution from the strongly interacting to the noninteracting limit (2017)

Franco T. Lisandrini, Alejandro M. Lobos, Ariel O. Dobry, and Claudio J. Gazza

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): Franco T. Lisandrini, Alejandro M. Lobos, Ariel O. Dobry, and Claudio J. Gazza We study, by means of the density-matrix renormalization group (DMRG) technique, the evolution of the ground state in a one-dimensional topological insulator, from the noninteracting to the strongly interacting limit, where the system can be mapped onto a topological Kondo-insulator model. We focus ... [Phys. Rev. B 96, 075124] Published Mon Aug 14, 2017

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Topological charge-density and spin-density waves in InAs/GaSb quantum wells under an in-plane magnetic field (2017)

Lun-Hui Hu, Chih-Chieh Chen, Chao-Xing Liu, Fu-Chun Zhang, and Yi Zhou

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-16

Beschreibung: Author(s): Lun-Hui Hu, Chih-Chieh Chen, Chao-Xing Liu, Fu-Chun Zhang, and Yi Zhou We study interaction effect of quantum spin Hall state in InAs/GaSb quantum wells under an in-plane magnetic field by using the self-consistent mean field theory. We construct a phase diagram as a function of intralayer and interlayer interactions, and identify two novel phases, a charge-/spin-densi... [Phys. Rev. B 96, 075130] Published Tue Aug 15, 2017

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Coulomb interaction driven instabilities of sliding Luttinger liquids (2017)

Shouvik Sur and Kun Yang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-16

Beschreibung: Author(s): Shouvik Sur and Kun Yang We study systems made of periodic arrays of one-dimensional quantum wires coupled by Coulomb interaction. Using bosonization an interacting metallic fixed point is obtained, which is shown to be a higher-dimensional analog of the Tomonaga-Luttinger liquid, or a sliding Luttinger liquid. This non-Fer... [Phys. Rev. B 96, 075131] Published Tue Aug 15, 2017

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Origin of the turn-on phenomenon in ${T}_{d}\text{−}\mathrm{MoT}{\mathrm{e}}_{2}$ (2017)

Q. L. Pei, W. J. Meng, X. Luo, H. Y. Lv, F. C. Chen, W. J. Lu, Y. Y. Han, P. Tong, W. H. Song, Y. B. Hou, Q. Y. Lu, and Y. P. Sun

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-16

Beschreibung: Author(s): Q. L. Pei, W. J. Meng, X. Luo, H. Y. Lv, F. C. Chen, W. J. Lu, Y. Y. Han, P. Tong, W. H. Song, Y. B. Hou, Q. Y. Lu, and Y. P. Sun We did the resistivity and scanning tunneling microscope/spectroscopy (STM/STS) experiments at different temperatures and magnetic fields to investigate the origin of the turn-on (t-o) phenomenon of T d − MoT e 2 . There are two interesting observations. Firstly, magnetoresistance (MR) follows the Kohler'... [Phys. Rev. B 96, 075132] Published Tue Aug 15, 2017

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Spectral functions of a time-periodically driven Falicov-Kimball model: Real-space Floquet dynamical mean-field theory study (2017)

Tao Qin and Walter Hofstetter

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-17

Beschreibung: Author(s): Tao Qin and Walter Hofstetter We present a systematic study of the spectral functions of a time-periodically driven Falicov-Kimball Hamiltonian. In the high-frequency limit, this system can be effectively described as a Harper-Hofstadter-Falicov-Kimball model. Using real-space Floquet dynamical mean-field theory (DMFT), we take ... [Phys. Rev. B 96, 075134] Published Wed Aug 16, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

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Thema: Physik

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Different metamagnetism between paramagnetic Ce and Yb isomorphs (2017)

Atsushi Miyake, Yoshiaki Sato, Masashi Tokunaga, Jumaeda Jatmika, and Takao Ebihara

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-23

Beschreibung: Author(s): Atsushi Miyake, Yoshiaki Sato, Masashi Tokunaga, Jumaeda Jatmika, and Takao Ebihara To solve the puzzle of metamagnetic phenomena in heavy-fermion systems, we have compared paramagnetic isostructural Ce and Yb systems, CeNi 2 Ge 2 and YbNi 2 Ge 2 , both of which are located near a magnetic instability. The most intriguing result is the discovery of a metamagneticlike anomaly for isomorphi... [Phys. Rev. B 96, 085127] Published Mon Aug 21, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Challenges for semilocal density functionals with asymptotically nonvanishing potentials (2017)

Thilo Aschebrock, Rickard Armiento, and Stephan Kümmel

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-23

Beschreibung: Author(s): Thilo Aschebrock, Rickard Armiento, and Stephan Kümmel The Becke-Johnson model potential [A. D. Becke and E. R. Johnson, J. Chem. Phys. 124 , 221101 (2006) ] and the potential of the AK13 functional [R. Armiento and S. Kümmel, Phys. Rev. Lett. 111 , 036402 (2013) ] have been shown to mimic features of the exact Kohn-Sham exchange potential, such as step str... [Phys. Rev. B 96, 075140] Published Mon Aug 21, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Collapse of Landau levels in Weyl semimetals (2017)

Vicente Arjona, Eduardo V. Castro, and María A. H. Vozmediano

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-23

Beschreibung: Author(s): Vicente Arjona, Eduardo V. Castro, and María A. H. Vozmediano It is known that in two-dimensional relativistic Dirac systems, the Landau levels can collapse in the presence of a critical in-plane electric field. We extend this mechanism to three-dimensional Weyl semimetals, and we analyze the physical consequences for the cases of both real and pseudo Landau l... [Phys. Rev. B 96, 081110(R)] Published Thu Aug 17, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Quasi-two-dimensional Fermi surfaces with localized $f$ electrons in the layered heavy-fermion compound ${\mathrm{CePt}}_{2}{\mathrm{In}}_{7}$ (2017)

K. Götze, Y. Krupko, J. A. N. Bruin, J. Klotz, R. D. H. Hinlopen, S. Ota, Y. Hirose, H. Harima, R. Settai, A. McCollam, and I. Sheikin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-23

Beschreibung: Author(s): K. Götze, Y. Krupko, J. A. N. Bruin, J. Klotz, R. D. H. Hinlopen, S. Ota, Y. Hirose, H. Harima, R. Settai, A. McCollam, and I. Sheikin We report measurements of the de Haas–van Alphen effect in the layered heavy-fermion compound CePt 2 In 7 in high magnetic fields up to 35 T. Above an angle-dependent threshold field, we observed several de Haas–van Alphen frequencies originating from almost ideally two-dimensional Fermi surfaces. The ... [Phys. Rev. B 96, 075138] Published Fri Aug 18, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Quantum phase transitions in strained graphene due to the interplay between spin fluctuations and anisotropic band structure (2017)

S. Arya, M. S. Laad, and S. R. Hassan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-23

Beschreibung: Author(s): S. Arya, M. S. Laad, and S. R. Hassan Strain tuning is increasingly being recognized as a clean tuning parameter to induce novel behavior in quantum matter. Motivated by the possibility of straining graphene up to 20 percent, we investigate novel quantum criticality due to interplay between strain-induced anisotropic band structure and ... [Phys. Rev. B 96, 085126] Published Mon Aug 21, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Orbital and spin ordering physics of the ${\mathrm{Mn}}_{3}{\mathrm{O}}_{4}$ spinel (2017)

Santanu Pal and Siddhartha Lal

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-23

Beschreibung: Author(s): Santanu Pal and Siddhartha Lal Motivated by recent experiments, we present a comprehensive theoretical study of the geometrically frustrated strongly correlated magnetic insulator Mn 3 O 4 spinel oxide based on a microscopic Hamiltonian involving lattice, spin, and orbital degrees of freedom. Possessing the physics of degenerate e g ... [Phys. Rev. B 96, 075139] Published Fri Aug 18, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Infrared spectroscopic study of ${\mathrm{CaFe}}_{0.7}{\mathrm{Co}}_{0.3}{\mathrm{O}}_{3}$ (2017)

C. X. Zhang, H. L. Xia, Y. M. Dai, Z. Y. Qiu, Q. T. Sui, Y. W. Long, and X. G. Qiu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-25

Beschreibung: Author(s): C. X. Zhang, H. L. Xia, Y. M. Dai, Z. Y. Qiu, Q. T. Sui, Y. W. Long, and X. G. Qiu Temperature-dependent infrared spectroscopy has been investigated for CaFe 0.7 Co 0.3 O 3 which undergoes a ferromagnetic transition at T C ≈ 177 K . It is observed that the spectral weight is transferred from ∼ 4800 – 14 000 cm − 1 to ∼ 0 – 4800 cm − 1 as the temperature is lowered around T C . Such a large-range spectral... [Phys. Rev. B 96, 075154] Published Thu Aug 24, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Electron delocalization and relaxation behavior in Cu-doped $\mathrm{B}{\mathrm{i}}_{2}\mathrm{S}{\mathrm{e}}_{3}$ films (2017)

Mingze Li, Zhenhua Wang, Liang Yang, Da Li, Q. R. Yao, G. H. Rao, Xuan P. A. Gao, and Zhidong Zhang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-25

Beschreibung: Author(s): Mingze Li, Zhenhua Wang, Liang Yang, Da Li, Q. R. Yao, G. H. Rao, Xuan P. A. Gao, and Zhidong Zhang C u x B i 2 S e 3 is known for superconductivity due to Cu intercalation in the van der Waals gaps between the quintuple layers of B i 2 S e 3 at x 〉 0.10 . Here we report the synthesis and transport properties of Cu-doped C u x B i 2 S e 3 films prepared by the chemical-vapor-deposition (CVD) method with 0.11 ≥ x ≥ 0 . It i... [Phys. Rev. B 96, 075152] Published Thu Aug 24, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Weyl-link semimetals (2017)

Po-Yao Chang and Chuck-Hou Yee

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-25

Beschreibung: Author(s): Po-Yao Chang and Chuck-Hou Yee A family of topological semimetallic phases where twofold degenerate gapless points form linked rings is introduced. We refer to this phase as Weyl-link semimetals. A concrete two-band model with two linked nodal lines is constructed. We demonstrate that the Chern-Simons 3-form depends on the linkin... [Phys. Rev. B 96, 081114(R)] Published Thu Aug 24, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Ruthenium-catalyzed insertion of adjacent diol carbon atoms into C-C bonds: Entry to type II polyketides (2017)

Bender, M., Turnbull, B. W. H., Ambler, B. R., Krische, M. J.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2017-08-25

Beschreibung: Current catalytic processes involving carbon-carbon bond activation rely on -unsaturated coupling partners. Exploiting the concept of transfer hydrogenative coupling, we report a ruthenium(0)-catalyzed cycloaddition of benzocyclobutenones that functionalizes two adjacent saturated diol carbon-hydrogen bonds. These regio- and diastereoselective processes enable convergent construction of type II polyketide substructures.

Schlagwort(e): Chemistry

Print ISSN: 0036-8075

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Thema: Biologie , Chemie und Pharmazie , Geologie und Paläontologie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik

Publiziert von American Association for the Advancement of Science (AAAS)

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Electron spin dynamics of ${\mathrm{Ce}}^{3+}$ ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation (2017)

D. V. Azamat, V. V. Belykh, D. R. Yakovlev, F. Fobbe, D. H. Feng, E. Evers, L. Jastrabik, A. Dejneka, and M. Bayer

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-31

Beschreibung: Author(s): D. V. Azamat, V. V. Belykh, D. R. Yakovlev, F. Fobbe, D. H. Feng, E. Evers, L. Jastrabik, A. Dejneka, and M. Bayer The spin relaxation dynamics of Ce 3 + ions in heavily cerium-doped YAG crystals is studied using pulse-electron paramagnetic resonance and time-resolved pump-probe Faraday rotation. Both techniques address the 4 f ground state, while pump-probe Faraday rotation also provides access to the excited 5 d s... [Phys. Rev. B 96, 075160] Published Wed Aug 30, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Transverse shift in Andreev reflection (2017)

Ying Liu, Zhi-Ming Yu, and Shengyuan A. Yang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-02

Beschreibung: Author(s): Ying Liu, Zhi-Ming Yu, and Shengyuan A. Yang An incoming electron is reflected back as a hole at a normal-metal–superconductor interface, a process known as Andreev reflection. We predict that there exists a universal transverse shift in this process due to the effect of spin-orbit coupling in the normal metal. Particularly, using both the sca... [Phys. Rev. B 96, 121101(R)] Published Fri Sep 01, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Magneto-chiral dichroism of ${\mathrm{CsCuCl}}_{3}$ (2017)

N. Nakagawa, N. Abe, S. Toyoda, S. Kimura, J. Zaccaro, I. Gautier-Luneau, D. Luneau, Y. Kousaka, A. Sera, M. Sera, K. Inoue, J. Akimitsu, Y. Tokunaga, and T. Arima

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-02

Beschreibung: Author(s): N. Nakagawa, N. Abe, S. Toyoda, S. Kimura, J. Zaccaro, I. Gautier-Luneau, D. Luneau, Y. Kousaka, A. Sera, M. Sera, K. Inoue, J. Akimitsu, Y. Tokunaga, and T. Arima In this Rapid Communication, we investigate the magneto-chiral dichroism (MChD) of right- and left-handed CsCuCl 3 crystals in a strong magnetic field up to 14.5 T. We perform near-infrared optical measurements, and the results show a change in the absorption coefficient of an intra-atomic d − d transi... [Phys. Rev. B 96, 121102(R)] Published Fri Sep 01, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Separation of electron and hole dynamics in the semimetal LaSb (2017)

F. Han, J. Xu, A. S. Botana, Z. L. Xiao, Y. L. Wang, W. G. Yang, D. Y. Chung, M. G. Kanatzidis, M. R. Norman, G. W. Crabtree, and W. K. Kwok

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-08

Beschreibung: Author(s): F. Han, J. Xu, A. S. Botana, Z. L. Xiao, Y. L. Wang, W. G. Yang, D. Y. Chung, M. G. Kanatzidis, M. R. Norman, G. W. Crabtree, and W. K. Kwok We report investigations on the magnetotransport in LaSb, which exhibits extremely large magnetoresistance (XMR). Foremost, we demonstrate that the resistivity plateau can be explained without invoking topological protection. We then determine the Fermi surface from Shubnikov–de Haas (SdH) quantum o... [Phys. Rev. B 96, 125112] Published Thu Sep 07, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Three-dimensional topological critical Dirac semimetal in $A\mathrm{MgBi}\phantom{\rule{0.16em}{0ex}}(A=$ K, Rb, Cs) (2017)

Congcong Le, Shengshan Qin, Xianxin Wu, Xia Dai, Peiyuan Fu, Chen Fang, and Jiangping Hu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-09-13

Beschreibung: Author(s): Congcong Le, Shengshan Qin, Xianxin Wu, Xia Dai, Peiyuan Fu, Chen Fang, and Jiangping Hu We predicted, using first principles calculation, that A MgBi ( A = K, Rb, Cs) are symmetry-protected topological semimetals near the boundary of type-I and type-II Dirac semimetal phases, dubbed topological critical Dirac semimetals. In-plane compressive strain or doping Rb or Cs into KMgBi can drive ... [Phys. Rev. B 96, 115121] Published Tue Sep 12, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Strain-induced quantum topological phase transitions in ${\mathrm{Na}}_{3}\mathrm{Bi}$ (2017)

Dexi Shao, Jiawei Ruan, Juefei Wu, Tong Chen, Zhaopeng Guo, Haijun Zhang, Jian Sun, Li Sheng, and Dingyu Xing

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Dexi Shao, Jiawei Ruan, Juefei Wu, Tong Chen, Zhaopeng Guo, Haijun Zhang, Jian Sun, Li Sheng, and Dingyu Xing Strain can be used as an effective tool to tune the crystal structure of materials and hence to modify their electronic structures, including topological properties. Here, taking Na 3 Bi as a paradigmatic example, we demonstrated with first-principles calculations and k · p models that the topological p... [Phys. Rev. B 96, 075112] Published Tue Aug 08, 2017

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Nanomechanical dissipation at a tip-induced Kondo onset (2017)

Pier Paolo Baruselli, Michele Fabrizio, and Erio Tosatti

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Pier Paolo Baruselli, Michele Fabrizio, and Erio Tosatti The onset or demise of Kondo effect in a magnetic impurity on a metal surface can be triggered, as sometimes observed, by the simple mechanical nudging of a tip. Such a mechanically driven quantum phase transition must reflect in a corresponding mechanical dissipation peak; yet, this kind of signatu... [Phys. Rev. B 96, 075113] Published Tue Aug 08, 2017

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Molecular polarizability of water from local dielectric response theory (2017)

Xiaochuan Ge and Deyu Lu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Xiaochuan Ge and Deyu Lu We propose a fully ab initio theory to compute the electron density response under the perturbation in the local field. This method is based on our recently developed local dielectric response theory [ Phys. Rev. B 92 , 241107(R) (2015) ], which provides a rigorous theoretical framework to treat local ... [Phys. Rev. B 96, 075114] Published Tue Aug 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Charge fractionalization in artificial Tomonaga-Luttinger liquids with controlled interaction strength (2017)

Paul Brasseur, Ngoc Han Tu, Yoshiaki Sekine, Koji Muraki, Masayuki Hashisaka, Toshimasa Fujisawa, and Norio Kumada

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Paul Brasseur, Ngoc Han Tu, Yoshiaki Sekine, Koji Muraki, Masayuki Hashisaka, Toshimasa Fujisawa, and Norio Kumada We investigate charge fractionalizations in artificial Tomonaga-Luttinger liquids (TLLs) composed of two capacitively coupled quantum Hall edge channels (ECs) in graphene. The interaction strength of the artificial TLLs can be controlled through distance W between the ECs. We show that the fractiona... [Phys. Rev. B 96, 081101(R)] Published Tue Aug 08, 2017

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Terahertz diffraction enhanced transparency probed in the near field (2017)

Alexei Halpin, Niels van Hoof, Arkabrata Bhattacharya, Christiaan Mennes, and Jaime Gomez Rivas

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Alexei Halpin, Niels van Hoof, Arkabrata Bhattacharya, Christiaan Mennes, and Jaime Gomez Rivas Electromagnetically induced transparency in metamaterials allows to engineer structures which transmit narrow spectral ranges of radiation while exhibiting a large group index. Implementation of this phenomenon frequently calls for strong near-field coupling of bright (dipolar) resonances to dark (m... [Phys. Rev. B 96, 085110] Published Tue Aug 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Observation of magnetoelastic effects in a quasi-one-dimensional spiral magnet (2017)

Chong Wang, Daiwei Yu, Xiaoqiang Liu, Rongyan Chen, Xinyu Du, Biaoyan Hu, Lichen Wang, Kazuki Iida, Kazuya Kamazawa, Shuichi Wakimoto, Ji Feng, Nanlin Wang, and Yuan Li

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Chong Wang, Daiwei Yu, Xiaoqiang Liu, Rongyan Chen, Xinyu Du, Biaoyan Hu, Lichen Wang, Kazuki Iida, Kazuya Kamazawa, Shuichi Wakimoto, Ji Feng, Nanlin Wang, and Yuan Li We present a systematic study of spin and lattice dynamics in the quasi-one-dimensional spiral magnet CuBr 2 , using Raman scattering in conjunction with infrared and neutron spectroscopy. Along with the development of spin correlations upon cooling, we observe a rich set of broad Raman bands at energ... [Phys. Rev. B 96, 085111] Published Tue Aug 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Topological properties of the chiral magnetic effect in multi-Weyl semimetals (2017)

Tomoya Hayata, Yuta Kikuchi, and Yuya Tanizaki

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Tomoya Hayata, Yuta Kikuchi, and Yuya Tanizaki We compute the chiral magnetic effect (CME) in multi-Weyl semimetals (multi-WSMs) based on the chiral kinetic theory. Multi-WSMs are WSMs with multiple monopole charges that have nonlinear and anisotropic dispersion relations near the Weyl points, and we need to extend the conventional computation o... [Phys. Rev. B 96, 085112] Published Tue Aug 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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Temperature- and doping-dependent roles of valleys in the thermoelectric performance of SnSe: A first-principles study (2017)

Hitoshi Mori, Hidetomo Usui, Masayuki Ochi, and Kazuhiko Kuroki

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): Hitoshi Mori, Hidetomo Usui, Masayuki Ochi, and Kazuhiko Kuroki We theoretically investigate how each orbital and valley play a role in high thermoelectric performance of SnSe. In the hole-doped regime, two kinds of valence band valleys contribute to its transport properties: one is the valley near the U-Z line, mainly consisting of the Se- p z orbitals, and the o... [Phys. Rev. B 96, 085113] Published Tue Aug 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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Absorption of circular polarized light in tilted type-I and type-II Weyl semimetals (2017)

S. P. Mukherjee and J. P. Carbotte

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): S. P. Mukherjee and J. P. Carbotte We calculate the ac optical response to circularly polarized light of a Weyl semimetal (WSM) with varying amounts of tilt of the Dirac cones. Both type-I and -II (overtilted) WSMs are considered in a continuum model with broken time-reversal symmetry. The Weyl nodes appear in pairs of equal energies... [Phys. Rev. B 96, 085114] Published Tue Aug 08, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Electronic structure and thermoelectric transport of black phosphorus (2017)

L. Craco, T. A. da Silva Pereira, and S. Leoni

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): L. Craco, T. A. da Silva Pereira, and S. Leoni We investigate anisotropic electronic structure and thermal transport properties of bulk black phosphorus (BP). Using density functional dynamical mean-field theory we first derive a correlation-induced electronic reconstruction, showing band-selective Kondoesque physics in this elemental p -band mat... [Phys. Rev. B 96, 075118] Published Wed Aug 09, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Competition between disorder and interaction effects in three-dimensional Weyl semimetals (2017)

J. González

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-12

Beschreibung: Author(s): J. González We investigate the low-energy scaling behavior of an interacting three-dimensional (3D) Weyl semimetal in the presence of disorder. In order to achieve a renormalization group analysis of the theory, we first focus on the effects of a short-ranged-correlated disorder potential, checking nevertheless... [Phys. Rev. B 96, 081104(R)] Published Wed Aug 09, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Light-induced valley polarization in interacting and nonlinear Weyl semimetals (2017)

Simon Bertrand, Ion Garate, and René Côté

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): Simon Bertrand, Ion Garate, and René Côté It has been recently predicted that the interplay between Coulomb interactions and Berry curvature can produce interesting optical phenomena in topologically nontrivial two-dimensional insulators. Here, we present a theory of the interband optical absorption for three-dimensional, doped Weyl semimet... [Phys. Rev. B 96, 075126] Published Mon Aug 14, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Topological field theory and matrix product states (2017)

Anton Kapustin, Alex Turzillo, and Minyoung You

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): Anton Kapustin, Alex Turzillo, and Minyoung You It is believed that most (perhaps all) gapped phases of matter can be described at long distances by topological quantum field theory (TQFT). On the other hand, it has been rigorously established that in 1+1d ground states of gapped Hamiltonians can be approximated by matrix product states (MPS). We... [Phys. Rev. B 96, 075125] Published Mon Aug 14, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Type-II nodal loops: Theory and material realization (2017)

Si Li, Zhi-Ming Yu, Ying Liu, Shan Guan, Shan-Shan Wang, Xiaoming Zhang, Yugui Yao, and Shengyuan A. Yang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): Si Li, Zhi-Ming Yu, Ying Liu, Shan Guan, Shan-Shan Wang, Xiaoming Zhang, Yugui Yao, and Shengyuan A. Yang A nodal loop appears when two bands, typically one electronlike and one holelike, are crossing each other linearly along a one-dimensional manifold in reciprocal space. Here, we propose a type of nodal loop which emerges from the crossing between two bands which are both electronlike (or holelike) a... [Phys. Rev. B 96, 081106(R)] Published Mon Aug 14, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Ultrafast structural dynamics of ${\mathrm{VO}}_{2}$ (2017)

Sergiy Lysenko, Nardeep Kumar, Armando Rúa, José Figueroa, Junqiang Lu, and Félix Fernández

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): Sergiy Lysenko, Nardeep Kumar, Armando Rúa, José Figueroa, Junqiang Lu, and Félix Fernández Distinct contribution of acoustic and optical phonons in light-induced lattice transformation was resolved at different time scales by monitoring the insulator-to-metal phase transition in epitaxial and nonepitaxial VO 2 films. Applying the ultrafast angle-resolved light scattering technique we demon... [Phys. Rev. B 96, 075128] Published Mon Aug 14, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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Antiferromagnetic topological nodal line semimetals (2017)

Jing Wang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2017-08-15

Beschreibung: Author(s): Jing Wang We study three-dimensional nodal line semimetals (NLSMs) with magnetic ordering and strong spin-orbit interaction. Two distinct classes of magnetic NLSMs are proposed. The first class is band-inversion NLSM where the accidental line node is induced by band inversion and locally protected by glide mi... [Phys. Rev. B 96, 081107(R)] Published Mon Aug 14, 2017

Schlagwort(e): Electronic structure and strongly correlated systems

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