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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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Publication Date: 2017-03-18

Description: 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

Keywords: Electronic structure and strongly correlated systems

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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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Publication Date: 2017-03-18

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Robustness of Majorana bound states in the short-junction limit (2017)

Doru Sticlet, Bas Nijholt, and Anton Akhmerov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-03-18

Description: Author(s): Doru Sticlet, Bas Nijholt, and Anton Akhmerov We study the effects of strong coupling between a superconductor and a semiconductor nanowire on the creation of the Majorana bound states, when the quasiparticle dwell time in the normal part of the nanowire is much shorter than the inverse superconducting gap. This “short-junction” limit is releva… [Phys. Rev. B 95, 115421] Published Fri Mar 17, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Quantum behavior of terahertz photoconductivity in silicon nanocrystals networks (2017)

V. Pushkarev, T. Ostatnický, H. Němec, T. Chlouba, F. Trojánek, P. Malý, M. Zacharias, S. Gutsch, D. Hiller, and P. Kužel

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-03-18

Description: Author(s): V. Pushkarev, T. Ostatnický, H. Němec, T. Chlouba, F. Trojánek, P. Malý, M. Zacharias, S. Gutsch, D. Hiller, and P. Kužel Quantum-size effects are essential for understanding the terahertz conductivity of semiconductor nanocrystals, particularly at low temperatures. We derived a quantum mechanical expression for the linear terahertz response of nanocrystals; its introduction into an appropriate effective medium model p… [Phys. Rev. B 95, 125424] Published Fri Mar 17, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Fully differential study on dissociative ionization dynamics of deuteron molecules in strong elliptical laser fields (2017)

Yun Shao, Peilun He, Ming-Ming Liu, Xufei Sun, Min Li, Yongkai Deng, Chengyin Wu, Feng He, Qihuang Gong, and Yunquan Liu

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-03-21

Description: Author(s): Yun Shao, Peilun He, Ming-Ming Liu, Xufei Sun, Min Li, Yongkai Deng, Chengyin Wu, Feng He, Qihuang Gong, and Yunquan Liu Deuteron momentum distributions from the dissociative ionization of D 2 in intense elliptically polarized laser fields have been explored in a joint experimental and numerical study. The asymmetrical charge localization in the dissociative D 2 + offers a large torque, and thus an elliptically polarized… [Phys. Rev. A 95, 031404(R)] Published Mon Mar 20, 2017

Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Electronic ISSN: 1094-1622

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Instantaneous charge and dielectric response to terahertz pulse excitation in TTF-CA (2017)

Hiroki Gomi, Naoto Yamagishi, Tomohito Mase, Takeshi J. Inagaki, and Akira Takahashi

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-03-21

Description: Author(s): Hiroki Gomi, Naoto Yamagishi, Tomohito Mase, Takeshi J. Inagaki, and Akira Takahashi We present the results of exact numerical calculations of the dielectric properties of tetrathiafulvalene- p -chloranil (TTF-CA) using the extended Hubbard model. The electronic polarization P ¯ el of the ionic ground state is obtained by directly calculating the adiabatic flow of current. The direction… [Phys. Rev. B 95, 094116] Published Mon Mar 20, 2017

Keywords: Structure, structural phase transitions, mechanical properties, defects

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Pseudomagnetic helicons (2017)

E. V. Gorbar, V. A. Miransky, I. A. Shovkovy, and P. O. Sukhachov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-03-21

Description: Author(s): E. V. Gorbar, V. A. Miransky, I. A. Shovkovy, and P. O. Sukhachov The existence of pseudomagnetic helicons is predicted for strained Dirac and Weyl materials. The corresponding collective modes are reminiscent of the usual helicons in metals in strong magnetic fields but can exist even without a magnetic field due to a strain-induced background pseudomagnetic fiel… [Phys. Rev. B 95, 115422] Published Mon Mar 20, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Tunneling wave packets of atoms from intense elliptically polarized fields in natural geometry (2017)

Meng Han, Min Li, Ming-Ming Liu, and Yunquan Liu

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-02-14

Description: Author(s): Meng Han, Min Li, Ming-Ming Liu, and Yunquan Liu We study strong-field tunneling of atoms in intense elliptically polarized laser fields in natural tunneling geometry. We obtain the temporal- and spatial-dependent tunneling ionization rates, the transverse and longitudinal momentum distributions, and the position distributions of the tunnel exit i… [Phys. Rev. A 95, 023406] Published Wed Feb 08, 2017

Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Effects of exchange-correlation potentials on the density-functional description of C_{60} versus C_{240} photoionization (2017)

Jinwoo Choi, Eon; Ho Chang, Dylan M. Anstine, Mohamed El-Amine Madjet, and Himadri S. Chakraborty

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-02-14

Description: Author(s): Jinwoo Choi, EonHo Chang, Dylan M. Anstine, Mohamed El-Amine Madjet, and Himadri S. Chakraborty We study the photoionization properties of the C 60 versus C 240 molecule in a spherical jellium frame of the density-functional method. Two prototypical approximations of the exchange-correlation (xc) functional are used: (i) the Gunnarsson-Lundqvist parametrization [Gunnarsson and Lundqvist, Phys. R… [Phys. Rev. A 95, 023404] Published Tue Feb 07, 2017

Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Controlling the s-wave scattering length with nonresonant light: Predictions of an asymptotic model (2017)

Anne Crubellier, Rosario González-Férez, Christiane P. Koch, and Eliane Luc-Koenig

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-02-14

Description: Author(s): Anne Crubellier, Rosario González-Férez, Christiane P. Koch, and Eliane Luc-Koenig A pair of atoms interacts with nonresonant light via its anisotropic polarizability. This effect can be used to tune the scattering properties of the atoms. Although the light-atom interaction varies with interatomic separation as 1 / R 3 , the effective s -wave potential decreases more rapidly as 1 / R 4 s… [Phys. Rev. A 95, 023405] Published Wed Feb 08, 2017

Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Two-body problem for two-dimensional electrons in the Bernervig-Hughes-Zhang model (2017)

Vladimir A. Sablikov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-02-14

Description: Author(s): Vladimir A. Sablikov We study the two-body problem for two-dimensional electron systems in a symmetrized Bernevig-Hughes-Zhang model, which is widely used to describe topological and conventional insulators. The main result is that two interacting electrons can form bound states with the energy in the gap of the band sp… [Phys. Rev. B 95, 085417] Published Fri Feb 10, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-02-14

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Spin-orbit and anisotropy effects in unoccupied bulk, surface, and image-potential states on W(110) (2017)

Henry Wortelen, Jürgen Henk, and Markus Donath

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-02-14

Description: Author(s): Henry Wortelen, Jürgen Henk, and Markus Donath We report on joint experimental and theoretical investigations of the unoccupied surface electronic structure of W(110). The spin-resolved inverse-photoemission experiments reveal a number of bands influenced by spin-orbit interaction and an image-potential state. The bands disperse differently with… [Phys. Rev. B 95, 085416] Published Thu Feb 09, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Formation of nanoripples on amorphous alumina thin films during low-energy ion-beam sputtering: Experiments and simulations (2017)

D. Babonneau, E. Vandenhecke, and S. Camelio

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-02-14

Description: Author(s): D. Babonneau, E. Vandenhecke, and S. Camelio The formation of nanopatterns induced by low-energy (0.5–1.5 keV) Xe + ion-beam sputtering of amorphous alumina thin films is investigated by atomic force microscopy and grazing incidence small-angle x-ray scattering. The observed dependence of the surface morphology on ion incidence angle, temperatu… [Phys. Rev. B 95, 085412] Published Thu Feb 09, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Influence of loading control on strain bursts and dislocation avalanches at the nanometer and micrometer scale (2017)

Yinan Cui, Giacomo Po, and Nasr Ghoniem

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-02-14

Description: Author(s): Yinan Cui, Giacomo Po, and Nasr Ghoniem Through three-dimensional discrete dislocation dynamics simulations, we show that by tuning the mode of external loading, the collective dynamics of dislocations undergo a transition from driven avalanches under stress control to quasiperiodic oscillations under strain control. We directly correlate… [Phys. Rev. B 95, 064103] Published Wed Feb 08, 2017

Keywords: Structure, structural phase transitions, mechanical properties, defects

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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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Publication Date: 2017-02-14

Description: 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

Keywords: 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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Publication Date: 2017-02-14

Description: 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

Keywords: Electronic structure and strongly correlated systems

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New high-pressure phases of MoSe_{2} and MoTe_{2} (2017)

Oto Kohulák and Roman Martoňák

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-02-14

Description: Author(s): Oto Kohulák and Roman Martoňák Three Mo-based transition-metal dichalcogenides MoS 2 , MoSe 2 , and MoTe 2 share at ambient conditions the same structure 2 H c , consisting of layers where Mo atoms are surrounded by six chalcogen atoms in trigonal prism coordination. The knowledge of their high-pressure behavior is, however, limited, part… [Phys. Rev. B 95, 054105] Published Tue Feb 07, 2017

Keywords: Structure, structural phase transitions, mechanical properties, defects

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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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Publication Date: 2017-02-14

Description: 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

Keywords: 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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Publication Date: 2017-02-14

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Direct observation of the band structure in bulk hexagonal boron nitride (2017)

Hugo Henck, Debora Pierucci, Giorgia Fugallo, José Avila, Guillaume Cassabois, Yannick J. Dappe, Mathieu G. Silly, Chaoyu Chen, Bernard Gil, Matteo Gatti, Francesco Sottile, Fausto Sirotti, Maria C. Asensio, and Abdelkarim Ouerghi

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-02-14

Description: Author(s): Hugo Henck, Debora Pierucci, Giorgia Fugallo, José Avila, Guillaume Cassabois, Yannick J. Dappe, Mathieu G. Silly, Chaoyu Chen, Bernard Gil, Matteo Gatti, Francesco Sottile, Fausto Sirotti, Maria C. Asensio, and Abdelkarim Ouerghi A promising route towards nanodevice applications relies on the association of graphene and transition metal dichalcogenides with hexagonal boron nitride ( h − BN ). Due to its insulating nature, h − BN has emerged as a natural substrate and gate dielectric for graphene-based electronic devices. However, … [Phys. Rev. B 95, 085410] Published Wed Feb 08, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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All-electric spin pumping in quantum channels with a single finger-gate capacitor (2017)

L. Y. Wang and C. S. Chu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-02-14

Description: Author(s): L. Y. Wang and C. S. Chu In this paper, we show that a single finger-gate capacitor (FGC) can generate pure spin pumping in a quantum channel (QC). Two dynamic fields, ac spin-orbit interaction and ac potential energy, both induced by the FGC onto the QC, are the agents driving the spin pumping. Smooth spatial profiles of t… [Phys. Rev. B 95, 075406] Published Tue Feb 07, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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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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Publication Date: 2017-08-12

Description: 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

Keywords: 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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Publication Date: 2017-08-12

Description: 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

Keywords: 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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Publication Date: 2017-08-12

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Measuring Majorana nonlocality and spin structure with a quantum dot (2017)

Elsa Prada, Ramón Aguado, and Pablo San-Jose

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-12

Description: Author(s): Elsa Prada, Ramón Aguado, and Pablo San-Jose Robust zero-bias transport anomalies in semiconducting nanowires with proximity-induced superconductivity have been convincingly demonstrated in various experiments. While these are compatible with the existence of Majorana zero modes at the ends of the nanowire, a direct proof of their nonlocality ... [Phys. Rev. B 96, 085418] Published Fri Aug 11, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Fano resonances in Majorana bound states–quantum dot hybrid systems (2017)

Alexander Schuray, Luzie Weithofer, and Patrik Recher

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-12

Description: Author(s): Alexander Schuray, Luzie Weithofer, and Patrik Recher We consider a quantum wire containing two Majorana bound states (MBS) at its ends that are tunnel-coupled to a current lead on one side and to a quantum dot (QD) on the other side. Using the method of full counting statistics we calculate the conductance and the zero-frequency noise. Using an effect... [Phys. Rev. B 96, 085417] Published Fri Aug 11, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Reply to “Comment on ‘Nondestructive light-shift measurements of single atoms in optical dipole traps’ ” (2017)

Chung-Yu Shih and Michael S. Chapman

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-08-12

Description: Author(s): Chung-Yu Shih and Michael S. Chapman This reply is in response to the comment by Shea and Gauthier on our paper [ Phys. Rev. A 87 , 063408 (2013) ]. [Phys. Rev. A 96, 027402] Published Fri Aug 11, 2017

Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Fate of the spin-$\frac{1}{2}$ Kondo effect in the presence of temperature gradients (2017)

Miguel A. Sierra, Rosa López, and David Sánchez

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-12

Description: Author(s): Miguel A. Sierra, Rosa López, and David Sánchez We consider a strongly interacting quantum dot connected to two leads held at quite different temperatures. Our aim is to study the behavior of the Kondo effect in the presence of large thermal biases. We use three different approaches, namely, a perturbation formalism based on the Kondo Hamiltonian... [Phys. Rev. B 96, 085416] Published Thu Aug 10, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-08-12

Description: 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

Keywords: 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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Publication Date: 2017-08-12

Description: 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

Keywords: 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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Publication Date: 2017-08-12

Description: 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

Keywords: 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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Publication Date: 2017-08-12

Description: 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

Keywords: 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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Publication Date: 2017-08-12

Description: 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

Keywords: Electronic structure and strongly correlated systems

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First-principles investigation of transient spin transfer torque in magnetic multilayer systems (2017)

Zhizhou Yu, Lei Zhang, and Jian Wang

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-12

Description: Author(s): Zhizhou Yu, Lei Zhang, and Jian Wang By employing the nonequilibrium Green's function (NEGF) method, the transient current and the transient behavior of the spin transfer torque (STT) of the magnetic layered system are investigated within the framework of density functional theory (DFT). To reduce the huge computational cost of the tra... [Phys. Rev. B 96, 075412] Published Wed Aug 09, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Ag on a Ni vicinal surface: Coupling Stranski-Krastanov and “magic” heteroepitaxial growth (2017)

Amandine Bellec, Yves Garreau, Jérôme Creuze, Alina Vlad, Frederic Picca, Michèle Sauvage-Simkin, and Alessandro Coati

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-12

Description: Author(s): Amandine Bellec, Yves Garreau, Jérôme Creuze, Alina Vlad, Frederic Picca, Michèle Sauvage-Simkin, and Alessandro Coati Using vicinal surfaces as a template for heteroepitaxial growth offers a unique possibility to control the orientation and the crystallinity of the grown layer. The study presented here focuses on the growth of Ag on a carefully chosen Ni(11 9 9) substrate. Ag adopts a Stranski-Krastanov growth mode... [Phys. Rev. B 96, 085414] Published Wed Aug 09, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Phase coexistence and Landau expansion parameters for a $0.70\mathrm{Pb}(\mathrm{M}{\mathrm{g}}_{1/3}\mathrm{N}{\mathrm{b}}_{2/3}){\mathrm{O}}_{3}\text{−}0.30\mathrm{PbTi}{\mathrm{O}}_{3}$ single crystal (2017)

Hangbo Zhang, Xiaoyan Lu, Ruixue Wang, Chunying Wang, Limei Zheng, Zhen Liu, Chao Yang, Rui Zhang, Bin Yang, and Wenwu Cao

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-15

Description: Author(s): Hangbo Zhang, Xiaoyan Lu, Ruixue Wang, Chunying Wang, Limei Zheng, Zhen Liu, Chao Yang, Rui Zhang, Bin Yang, and Wenwu Cao Multidomain relaxor-based ferroelectric single crystals ( 1 − x ) Pb ( M g 1 / 3 N b 2 / 3 ) O 3 − x PbTi O 3 (PMN-PT) have extraordinarily large electromechanical properties, but the origin of their giant piezoelectric properties is still not well understood. The Landau-like phenomenological theory is a feasible tool to s... [Phys. Rev. B 96, 054109] Published Mon Aug 14, 2017

Keywords: Structure, structural phase transitions, mechanical properties, defects

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Interplay of phase sequence and electronic structure in the modulated martensites of ${\mathrm{Mn}}_{2}\mathrm{NiGa}$ from first-principles calculations (2017)

Ashis Kundu, Markus E. Gruner, Mario Siewert, Alfred Hucht, Peter Entel, and Subhradip Ghosh

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-15

Description: Author(s): Ashis Kundu, Markus E. Gruner, Mario Siewert, Alfred Hucht, Peter Entel, and Subhradip Ghosh We investigate the relative stability, structural properties, and electronic structure of various modulated martensites of the magnetic shape memory alloy Mn 2 NiGa by means of density functional theory. We observe that the instability in the high-temperature cubic structure first drives the system to... [Phys. Rev. B 96, 064107] Published Mon Aug 14, 2017

Keywords: Structure, structural phase transitions, mechanical properties, defects

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Computer simulation of thermal conductivity in vulcanized polyisoprene at variable strain and temperature (2017)

Sven Engelmann, Jan Meyer, and Reinhard Hentschke

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-15

Description: Author(s): Sven Engelmann, Jan Meyer, and Reinhard Hentschke We study the thermal conductivity tensor in an atomistic model of vulcanized cis-1,4-polyisoprene (PI) rubber via molecular dynamics simulations. Our polymer force field is based on V. A. Harmandaris et al. [ J. Chem. Phys. 116 , 436 (2002) ], whereas the polymerization algorithm follows the descriptio... [Phys. Rev. B 96, 054110] Published Mon Aug 14, 2017

Keywords: Structure, structural phase transitions, mechanical properties, defects

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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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Publication Date: 2017-08-15

Description: 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

Keywords: 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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Publication Date: 2017-08-15

Description: 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

Keywords: 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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Publication Date: 2017-08-16

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Quantum interference in coherent tunneling through branched molecular junctions containing ferrocene centers (2017)

Xin Zhao, Georg Kastlunger, and Robert Stadler

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-16

Description: Author(s): Xin Zhao, Georg Kastlunger, and Robert Stadler In our theoretical study where we combine a nonequilibrium Green's function approach with density functional theory we investigate branched compounds containing ferrocene moieties in both branches which, due to their metal centers, are designed to allow for asymmetry induced by local charging. In th... [Phys. Rev. B 96, 085421] Published Tue Aug 15, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Suppression of the Landau-Zener transition probability by weak classical noise (2017)

Rajesh K. Malla, E. G. Mishchenko, and M. E. Raikh

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-16

Description: Author(s): Rajesh K. Malla, E. G. Mishchenko, and M. E. Raikh When the drive, which causes the level crossing in a qubit, is slow, the probability P L Z of the Landau-Zener transition is close to 1. In this regime, which is most promising for applications, the noise due to the coupling to the environment reduces the average P L Z . At the same time, the survival pr... [Phys. Rev. B 96, 075419] Published Tue Aug 15, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Theoretical study of the charge transfer and electron emission in the scattering of ${\mathrm{He}}^{+}$ by an ${\mathrm{AlF}}_{3}$ surface (2017)

A. Iglesias-García, C. González, and E. C. Goldberg

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-23

Description: Author(s): A. Iglesias-García, C. González, and E. C. Goldberg Experimental results of electron emission from surfaces of aluminum fluoride impacted by keV noble gas ions ( He + , Ne + , Ar + ) show a high-energy structure that increases in intensity with ion energy in the case of He + and Ar + and is nearly independent on the impact energy for Ne + ions. It is also obse... [Phys. Rev. B 96, 075428] Published Mon Aug 21, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Germanene and stanene on two-dimensional substrates: Dirac cone and ${Z}_{2}$ invariant (2017)

Zeyuan Ni, Emi Minamitani, Yasunobu Ando, and Satoshi Watanabe

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-23

Description: Author(s): Zeyuan Ni, Emi Minamitani, Yasunobu Ando, and Satoshi Watanabe By using the combination of the ab initio density functional theory and data mining of the Inorganic Crystal Structure Database, a series of monolayer materials are found to be suitable substrates for germanene or stanene, including some of the Cd I 2 -type materials, CuI, and GaGeTe. All of the found ... [Phys. Rev. B 96, 075427] Published Mon Aug 21, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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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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Publication Date: 2017-08-23

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Defects and oxidation resilience in InSe (2017)

K. J. Xiao, A. Carvalho, and A. H. Castro Neto

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-23

Description: Author(s): K. J. Xiao, A. Carvalho, and A. H. Castro Neto We use density functional theory to study intrinsic defects and oxygen related defects in indium selenide. We find that InSe is prone to oxidation, but however not reacting with oxygen as strongly as phosphorene. The dominant intrinsic defects in In-rich material are the In interstitial, a shallow d... [Phys. Rev. B 96, 054112] Published Thu Aug 17, 2017

Keywords: Structure, structural phase transitions, mechanical properties, defects

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Numerical observation of two sets of low-order harmonics near the ionization threshold (2017)

Wei-Hao Xiong, Jian-Zhao Jin, Liang-You Peng, and Qihuang Gong

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-08-24

Description: Author(s): Wei-Hao Xiong, Jian-Zhao Jin, Liang-You Peng, and Qihuang Gong The bound states of atoms play important roles during the interaction with a strong laser pulse. In the present work, we observe a set of harmonics which are not located at the usual odd harmonics. These harmonics can be clearly identified when the driving frequency is resonant with the excited stat... [Phys. Rev. A 96, 023418] Published Tue Aug 22, 2017

Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Rydberg electrometry for optical lattice clocks (2017)

W. Bowden, R. Hobson, P. Huillery, P. Gill, M. P. A. Jones, and I. R. Hill

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-08-24

Description: Author(s): W. Bowden, R. Hobson, P. Huillery, P. Gill, M. P. A. Jones, and I. R. Hill Electrometry is performed using Rydberg states to evaluate the quadratic Stark shift of the 5 s 2 S 0 1 − 5 s 5 p P 0 3 clock transition in strontium. By measuring the Stark shift of the highly excited 5 s 75 d D 2 1 state using electromagnetically induced transparency, we characterize the electric field with sufficie... [Phys. Rev. A 96, 023419] Published Tue Aug 22, 2017

Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Classical and quantum-mechanical scaling of ionization from excited hydrogen atoms in single-cycle THz pulses (2017)

M. Chovancova, H. Agueny, J. J. Rørstad, and J. P. Hansen

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2017-08-26

Description: Author(s): M. Chovancova, H. Agueny, J. J. Rørstad, and J. P. Hansen Excited atoms, or nanotip surfaces, exposed to strong single-cycle terahertz radiation emit electrons with energies strongly dependent on the characteristics of the initial state. Here we consider scaling properties of the ionization probability and electron momenta of H( n d ) atoms exposed to a singl... [Phys. Rev. A 96, 023423] Published Fri Aug 25, 2017

Keywords: Atomic and molecular processes in external fields, including interactions with strong fields and short pulses

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Line nodes, Dirac points, and Lifshitz transition in two-dimensional nonsymmorphic photonic crystals (2017)

Jun Yu Lin, Nai Chao Hu, You Jian Chen, Ching Hua Lee, and Xiao Zhang

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-29

Description: Author(s): Jun Yu Lin, Nai Chao Hu, You Jian Chen, Ching Hua Lee, and Xiao Zhang Topological phase transitions, which have fascinated generations of physicists, are always demarcated by gap closures. In this work, we propose very simple two-dimensional photonic crystal lattices with gap closures, i.e., band degeneracies protected by nonsymmorphic symmetry. Our photonic structure... [Phys. Rev. B 96, 075438] Published Mon Aug 28, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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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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Publication Date: 2017-08-29

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Vibronic coupling and band gap trends in ${\mathrm{CuGeO}}_{3}$ nanorods (2017)

Kenneth R. O'Neal, Amal al-Wahish, Zhaoqian Li, Peng Chen, Jae Wook Kim, Sang-Wook Cheong, Guy Dhalenne, Alexandre Revcolevschi, Xue-Tai Chen, and Janice L. Musfeldt

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-29

Description: Author(s): Kenneth R. O'Neal, Amal al-Wahish, Zhaoqian Li, Peng Chen, Jae Wook Kim, Sang-Wook Cheong, Guy Dhalenne, Alexandre Revcolevschi, Xue-Tai Chen, and Janice L. Musfeldt We measured the optical response of CuGeO 3 nanorods in order to reveal size effects on the electronic properties. The vibronically activated d -to- d color band excitations are activated by the 131 and 478 cm − 1 phonons, with the relative contribution of the lower frequency O-Cu-O bending mode increasi... [Phys. Rev. B 96, 075437] Published Mon Aug 28, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Plasmon canalization and tunneling over anisotropic metasurfaces (2017)

Diego Correas-Serrano, Andrea Alù, and J. Sebastian Gomez-Diaz

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-29

Description: Author(s): Diego Correas-Serrano, Andrea Alù, and J. Sebastian Gomez-Diaz We discuss the possibility of plasmon canalization, collimation, and tunneling over ultrathin metasurfaces, enabled by extreme anisotropy in their complex conductivity dyadic. The interplay between anisotropy, conductivity-near-zero, and loss is exploited here to derive general conditions for plasmo... [Phys. Rev. B 96, 075436] Published Mon Aug 28, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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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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Publication Date: 2017-08-29

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Energy loss and surface temperature effects in ab initio molecular dynamics simulations: N adsorption on Ag(111) as a case study (2017)

Dino Novko, Ivor Lončarić, María Blanco-Rey, J. Iñaki Juaristi, and Maite Alducin

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-29

Description: Author(s): Dino Novko, Ivor Lončarić, María Blanco-Rey, J. Iñaki Juaristi, and Maite Alducin We study surface temperature effects on the adsorption and relaxation of N atoms on Ag(111). To this aim, we perform ab initio molecular dynamics simulations with electronic friction, in which the surface is coupled to a thermostat that fixes the desired surface temperature. Simulations performed at... [Phys. Rev. B 96, 085437] Published Mon Aug 28, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Enhanced periodic modulation of electronic states in a hexagonal iron-nitride monolayer on Cu(001) via interfacial interaction (2017)

K. Ienaga, T. Miyamachi, Y. Takahashi, N. Kawamura, and F. Komori

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-29

Description: Author(s): K. Ienaga, T. Miyamachi, Y. Takahashi, N. Kawamura, and F. Komori Metal nitride has robust bonding between metal and nitrogen atoms. We have synthesized a monoatomic layer of a hexagonal-type iron nitride with strong Fe-N bond on the Cu(001) substrate with a fourfold lattice symmetry. From atomic-scale observation using scanning tunneling microscopy, we have found... [Phys. Rev. B 96, 085439] Published Mon Aug 28, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Perfect reflection control for impenetrable surfaces using surface waves of orthogonal polarization (2017)

Do-Hoon Kwon and Sergei A. Tretyakov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-29

Description: Author(s): Do-Hoon Kwon and Sergei A. Tretyakov For impenetrable electromagnetic surfaces, a metasurface design approach for perfect control of the reflection phenomena using gradient anisotropic tensor surface impedance is presented. It utilizes a set of orthogonally polarized auxiliary surface waves to create pointwise reactive impedance charac... [Phys. Rev. B 96, 085438] Published Mon Aug 28, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Pure dephasing of single Mn spin in semiconductor quantum dots (2017)

Dingyang Liu, Wenxi Lai, and Wen Yang

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-31

Description: Author(s): Dingyang Liu, Wenxi Lai, and Wen Yang We present comprehensive analytical and numerical studies on the pure dephasing of a single Mn spin in a semiconductor quantum dot due to (i) its sp-d exchange interaction with an electronic environment, and (ii) its hyperfine interaction with the nuclear spin environment. For (i), by modeling the e... [Phys. Rev. B 96, 075443] Published Wed Aug 30, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-08-31

Description: 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

Keywords: 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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Publication Date: 2017-08-31

Description: 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

Keywords: 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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Publication Date: 2017-08-31

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Anatomy of topological surface states: Exact solutions from destructive interference on frustrated lattices (2017)

Flore K. Kunst, Maximilian Trescher, and Emil J. Bergholtz

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-31

Description: Author(s): Flore K. Kunst, Maximilian Trescher, and Emil J. Bergholtz The hallmark of topological phases is their robust boundary signature whose intriguing properties—such as the one-way transport on the chiral edge of a Chern insulator and the sudden disappearance of surface states forming open Fermi arcs on the surfaces of Weyl semimetals—are impossible to realize ... [Phys. Rev. B 96, 085443] Published Wed Aug 30, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Lattice instability during phase transformations under multiaxial stress: Modified transformation work criterion (2017)

Valery I. Levitas, Hao Chen, and Liming Xiong

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-31

Description: Author(s): Valery I. Levitas, Hao Chen, and Liming Xiong A continuum/atomistic approach for predicting lattice instability during crystal-crystal phase transformations (PTs) is developed for the general loading with an arbitrary stress tensor and large strains. It is based on a synergistic combination of the generalized Landau-type theory for PTs and mole... [Phys. Rev. B 96, 054118] Published Tue Aug 29, 2017

Keywords: Structure, structural phase transitions, mechanical properties, defects

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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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Publication Date: 2017-08-31

Description: 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

Keywords: 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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Publication Date: 2017-08-31

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Effective mobility for sequential carrier transport in multiple quantum well structures (2017)

Kasidit Toprasertpong, Stephen M. Goodnick, Yoshiaki Nakano, and Masakazu Sugiyama

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-31

Description: Author(s): Kasidit Toprasertpong, Stephen M. Goodnick, Yoshiaki Nakano, and Masakazu Sugiyama We investigate a theoretical model for effective carrier mobility to comprehensively describe the behavior of the perpendicular carrier transport across multiple quantum well (MQW) structures under applied electric field. The analytical expressions of effective mobilities for thermionic emission, di... [Phys. Rev. B 96, 075441] Published Tue Aug 29, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Tight-binding model investigation of the biaxial strain induced topological phase transition in ${\mathrm{GeCH}}_{3}$ (2017)

Mohsen Rezaei, Esmaeil Taghizadeh Sisakht, Farhad Fazileh, Zahra Aslani, and F. M. Peeters

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-08-31

Description: Author(s): Mohsen Rezaei, Esmaeil Taghizadeh Sisakht, Farhad Fazileh, Zahra Aslani, and F. M. Peeters We propose a tight-binding (TB) model, that includes spin-orbit coupling (SOC), to describe the electronic properties of methyl-substituted germanane ( GeCH 3 ). This model gives an electronic spectrum in agreement with first principle results close to the Fermi level. Using the Z 2 formalism, we show t... [Phys. Rev. B 96, 085441] Published Tue Aug 29, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-08-31

Description: 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

Keywords: Electronic structure and strongly correlated systems

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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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Publication Date: 2017-09-06

Description: 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

Keywords: 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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Publication Date: 2017-09-06

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Thermoelectric properties of a ferromagnet-superconductor hybrid junction: Role of interfacial Rashba spin-orbit interaction (2017)

Paramita Dutta, Arijit Saha, and A. M. Jayannavar

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-06

Description: Author(s): Paramita Dutta, Arijit Saha, and A. M. Jayannavar We investigate thermoelectric properties of a ferromagnet-superconductor hybrid structure with Rashba spin-orbit interaction and delta function potential barrier at the interfacial layer. The exponential rise of thermal conductance with temperature manifests a crossover temperature scale separating ... [Phys. Rev. B 96, 115404] Published Tue Sep 05, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Unveiling subsurface hydrogen-bond structure of hexagonal water ice (2017)

Yuji Otsuki, Toshiki Sugimoto, Tatsuya Ishiyama, Akihiro Morita, Kazuya Watanabe, and Yoshiyasu Matsumoto

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-06

Description: Author(s): Yuji Otsuki, Toshiki Sugimoto, Tatsuya Ishiyama, Akihiro Morita, Kazuya Watanabe, and Yoshiyasu Matsumoto The phase-resolved sum-frequency-generation (SFG) spectrum for the basal face of hexagonal ice is reported and is interpreted by molecular dynamics simulations combined with ab initio quantum calculations. Here, we demonstrate that the line shape of the SFG spectra of isotope-diluted OH chromophores... [Phys. Rev. B 96, 115405] Published Tue Sep 05, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-09-06

Description: 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

Keywords: 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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Publication Date: 2017-09-06

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Understanding the photoemission distribution of strongly interacting two-dimensional overlayers (2017)

Daniel Lüftner, Simon Weiß, Xiaosheng Yang, Philipp Hurdax, Vitaliy Feyer, Alexander Gottwald, Georg Koller, Serguei Soubatch, Peter Puschnig, Michael G. Ramsey, and F. Stefan Tautz

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-06

Description: Author(s): Daniel Lüftner, Simon Weiß, Xiaosheng Yang, Philipp Hurdax, Vitaliy Feyer, Alexander Gottwald, Georg Koller, Serguei Soubatch, Peter Puschnig, Michael G. Ramsey, and F. Stefan Tautz Photoemission tomography (PT), the analysis of the photoemission intensity distribution within the plane wave final-state approximation, is being established as a useful tool for extracting the electronic and geometric structure of weakly interacting organic overlayers. Here we present a simple meth... [Phys. Rev. B 96, 125402] Published Tue Sep 05, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Spin-dependent electron-phonon coupling in the valence band of single-layer ${\mathrm{WS}}_{2}$ (2017)

Nicki Frank Hinsche, Arlette S. Ngankeu, Kevin Guilloy, Sanjoy K. Mahatha, Antonija Grubišić Čabo, Marco Bianchi, Maciej Dendzik, Charlotte E. Sanders, Jill A. Miwa, Harsh Bana, Elisabetta Travaglia, Paolo Lacovig, Luca Bignardi, Rosanna Larciprete, Alessandro Baraldi, Silvano Lizzit, Kristian Sommer Thygesen, and Philip Hofmann

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-06

Description: Author(s): Nicki Frank Hinsche, Arlette S. Ngankeu, Kevin Guilloy, Sanjoy K. Mahatha, Antonija Grubišić Čabo, Marco Bianchi, Maciej Dendzik, Charlotte E. Sanders, Jill A. Miwa, Harsh Bana, Elisabetta Travaglia, Paolo Lacovig, Luca Bignardi, Rosanna Larciprete, Alessandro Baraldi, Silvano Lizzit, Kristian Sommer Thygesen, and Philip Hofmann The absence of inversion symmetry leads to a strong spin-orbit splitting of the upper valence band of semiconducting single-layer transition-metal dichalchogenides such as MoS 2 or WS 2 . This permits a direct comparison of the electron-phonon coupling strength in states that only differ by their spin.... [Phys. Rev. B 96, 121402(R)] Published Tue Sep 05, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional systems

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Nonlinear response of a MgZnO/ZnO heterostructure close to zero bias (2017)

Q. Shi, J. Falson, M. A. Zudov, Y. Kozuka, A. Tsukazaki, M. Kawasaki, and J. Smet

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-06

Description: Author(s): Q. Shi, J. Falson, M. A. Zudov, Y. Kozuka, A. Tsukazaki, M. Kawasaki, and J. Smet We report on magnetotransport properties of a MgZnO/ZnO heterostructure subjected to weak direct currents. We find that in the regime of overlapping Landau levels, the differential resistivity acquires a quantum correction proportional to both the square of the current and the Dingle factor. The ana... [Phys. Rev. B 96, 125401] Published Tue Sep 05, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-09-06

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Bayan Karimi and Jukka P. Pekola

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-06

Description: Author(s): Bayan Karimi and Jukka P. Pekola Two qubits form a quantum four-level system. The golden-rule based transition rates between these states are determined by the coupling of the qubits to noise sources. We demonstrate that depending on whether the noise acting on the two qubits is correlated or not, these transitions are governed by ... [Phys. Rev. B 96, 115408] Published Tue Sep 05, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-09-06

Description: 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

Keywords: 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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Publication Date: 2017-09-06

Description: 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

Keywords: 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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Publication Date: 2017-09-06

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Magnetic field effect on the lasing threshold of a semimagnetic polariton condensate (2017)

J.-G. Rousset, B. Piętka, M. Król, R. Mirek, K. Lekenta, J. Szczytko, W. Pacuski, and M. Nawrocki

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-06

Description: Author(s): J.-G. Rousset, B. Piętka, M. Król, R. Mirek, K. Lekenta, J. Szczytko, W. Pacuski, and M. Nawrocki We evidence magnetic field triggered polariton lasing in a microcavity containing semimagnetic quantum wells. This effect is associated with a decrease of the polariton lasing threshold power in magnetic field. The observed magnetic field dependence of the threshold power systematically exhibits a m... [Phys. Rev. B 96, 125403] Published Tue Sep 05, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-09-07

Description: 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

Keywords: Electronic structure and strongly correlated systems

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87

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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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Publication Date: 2017-09-07

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Magnetotransport in heterostructures of transition metal dichalcogenides and graphene (2017)

Tobias Völkl, Tobias Rockinger, Martin Drienovsky, Kenji Watanabe, Takashi Taniguchi, Dieter Weiss, and Jonathan Eroms

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-07

Description: Author(s): Tobias Völkl, Tobias Rockinger, Martin Drienovsky, Kenji Watanabe, Takashi Taniguchi, Dieter Weiss, and Jonathan Eroms We use a van der Waals pickup technique to fabricate different heterostructures containing WSe 2 ( WS 2 ) and graphene. The heterostructures were structured by plasma etching, contacted by one-dimensional edge contacts, and a top gate was deposited. For graphene / WSe 2 / SiO 2 samples we observe mobilities of... [Phys. Rev. B 96, 125405] Published Wed Sep 06, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-09-07

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Type-II quantum-dot-in-nanowire structures with large oscillator strength for optical quantum gate applications (2017)

Masoomeh Taherkhani, Morten Willatzen, Jesper Mørk, Niels Gregersen, and Dara P. S. McCutcheon

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-08

Description: Author(s): Masoomeh Taherkhani, Morten Willatzen, Jesper Mørk, Niels Gregersen, and Dara P. S. McCutcheon We present a numerical investigation of the exciton energy and oscillator strength in type-II nanowire quantum dots. For a single quantum dot, the poor overlap of the electron part and the weakly confined hole part of the excitonic wave function leads to a low oscillator strength compared to type-I ... [Phys. Rev. B 96, 125408] Published Thu Sep 07, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-09-08

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Acoustic metasurfaces for scattering-free anomalous reflection and refraction (2017)

A. Díaz-Rubio and S. A. Tretyakov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-08

Description: Author(s): A. Díaz-Rubio and S. A. Tretyakov Manipulation of acoustic wave fronts by thin and planar devices, known as metasurfaces, has been extensively studied, in view of many important applications. Reflective and refractive metasurfaces are designed using the generalized reflection and Snell's laws, which tell that local phase shifts at t... [Phys. Rev. B 96, 125409] Published Thu Sep 07, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-09-08

Description: 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

Keywords: 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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Publication Date: 2017-09-09

Description: 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

Keywords: 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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Publication Date: 2017-09-09

Description: 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

Keywords: Electronic structure and strongly correlated systems

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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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Publication Date: 2017-09-09

Description: 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

Keywords: Electronic structure and strongly correlated systems

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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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Publication Date: 2017-09-09

Description: 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

Keywords: Electronic structure and strongly correlated systems

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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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Publication Date: 2017-09-09

Description: 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

Keywords: Electronic structure and strongly correlated systems

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Magneto-optical transport properties of monolayer ${\mathrm{MoS}}_{2}$ on polar substrates (2017)

Chuong V. Nguyen, Nguyen N. Hieu, Nikolai A. Poklonski, Victor V. Ilyasov, Le Dinh, Tran C. Phong, Luong V. Tung, and Huynh V. Phuc

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2017-09-09

Description: Author(s): Chuong V. Nguyen, Nguyen N. Hieu, Nikolai A. Poklonski, Victor V. Ilyasov, Le Dinh, Tran C. Phong, Luong V. Tung, and Huynh V. Phuc We theoretically study the magneto-optical transport properties of monolayer molybdenum disulfide ( MoS 2 ) on polar substrates in the presence of a perpendicular magnetic field. The magneto-optical absorption coefficient (MOAC) is investigated as a function of the incident photon energy when carriers ... [Phys. Rev. B 96, 125411] Published Fri Sep 08, 2017

Keywords: Surface physics, nanoscale physics, low-dimensional 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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Publication Date: 2017-09-12

Description: 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

Keywords: Electronic structure and strongly correlated systems

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