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101

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Beyond many-body localized states in a spin-disordered Hubbard model (2018)

Xiongjie Yu, Di Luo, and Bryan K. Clark

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-06

Beschreibung: Author(s): Xiongjie Yu, Di Luo, and Bryan K. Clark A prime characterization of many-body localized (MBL) systems is the entanglement of their eigenstates; in contrast to the typical ergodic phase whose eigenstates are volume law, MBL eigenstates obey an area law. In this paper, we show that a spin-disordered Hubbard model has both a large number of ... [Phys. Rev. B 98, 115106] Published Wed Sep 05, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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102

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Counterflows in viscous electron-hole fluid (2018)

P. S. Alekseev, A. P. Dmitriev, I. V. Gornyi, V. Yu. Kachorovskii, B. N. Narozhny, and M. Titov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-07

Beschreibung: Author(s): P. S. Alekseev, A. P. Dmitriev, I. V. Gornyi, V. Yu. Kachorovskii, B. N. Narozhny, and M. Titov In ultrapure conductors, the collective motion of charge carriers at relatively high temperatures may become hydrodynamic such that electronic transport may be described similarly to a viscous flow. In confined geometries (e.g., in ultrahigh quality nanostructures), the resulting flow is Poiseuille-... [Phys. Rev. B 98, 125111] Published Thu Sep 06, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Terahertz charge dynamics unveil fundamental transport anisotropy in charge-ordered $\mathrm{P}{\mathrm{r}}_{0.5}\mathrm{E}{\mathrm{u}}_{0.5}\mathrm{Ni}{\mathrm{O}}_{3}$ nickelate thin films (2018)

Sarmistha Das, G. L. Prajapati, P. Anagha, and D. S. Rana

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-07

Beschreibung: Author(s): Sarmistha Das, G. L. Prajapati, P. Anagha, and D. S. Rana Electrons condensed in a collective mode and behaving as free charge carriers are two important facets induced by the complex intertwining of charge, spin, orbital, and lattice degrees of freedom. Existence of these two electronic ground states in the same structural/chemical phase is as much desire... [Phys. Rev. B 98, 115110] Published Thu Sep 06, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Zeolitic imidazolate framework membranes made by ligand-induced permselectivation (2018)

Ma, X., Kumar, P., Mittal, N., Khlyustova, A., Daoutidis, P., Mkhoyan, K. A., Tsapatsis, M.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2018-09-07

Beschreibung: Zeolitic imidazolate framework (ZIF) membranes are emerging as a promising energy-efficient separation technology. However, their reliable and scalable manufacturing remains a challenge. We demonstrate the fabrication of ZIF nanocomposite membranes by means of an all-vapor-phase processing method based on atomic layer deposition (ALD) of ZnO in a porous support followed by ligand-vapor treatment. After ALD, the obtained nanocomposite exhibits low flux and is not selective, whereas after ligand-vapor (2-methylimidazole) treatment, it is partially transformed to ZIF and shows stable performance with high mixture separation factor for propylene over propane (an energy-intensive high-volume separation) and high propylene flux. Membrane synthesis through ligand-induced permselectivation of a nonselective and impermeable deposit is shown to be simple and highly reproducible and holds promise for scalability.

Schlagwort(e): Engineering

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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105

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Influence of carrier lifetime on quantum criticality and superconducting ${T}_{c}$ of (TMTSF)${}_{2}{\mathrm{ClO}}_{4}$ (2018)

Abdelouahab Sedeki, Pascale Auban-Senzier, Shingo Yonezawa, Claude Bourbonnais, and Denis Jerome

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-08

Beschreibung: Author(s): Abdelouahab Sedeki, Pascale Auban-Senzier, Shingo Yonezawa, Claude Bourbonnais, and Denis Jerome This work presents and analyzes electrical resistivity data on the organic superconductor ( TMTSF ) 2 ClO 4 and their anion-substituted alloys ( TMTSF ) 2 ( ClO 4 ) 1 − x ( ReO 4 ) x along the least conducting c ★ axis. Nonmagnetic disorder introduced by finite size domains of anion ordering on non-Fermi-liquid characte... [Phys. Rev. B 98, 115111] Published Fri Sep 07, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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106

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Calculation of the four-spin cyclic exchange in cuprates (2018)

A. A. Aligia

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-11

Beschreibung: Author(s): A. A. Aligia Starting from the three-band Hubbard model for the cuprates, we calculate analytically the four-spin cyclic exchange in the limit of infinite on-site Coulomb repulsion and zero O-O hopping t p p using two methods: (i) perturbation theory in t p d / Δ , where t p d is the Cu-O hopping and Δ the Cu-O charge tr... [Phys. Rev. B 98, 125118] Published Mon Sep 10, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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107

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Finite-temperature phase diagram of (111) nickelate bilayers (2018)

Oleg Janson and Karsten Held

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-12

Beschreibung: Author(s): Oleg Janson and Karsten Held We report a density functional theory plus dynamical mean-field theory (DFT+DMFT) study of an oxide heterostructure of LaNiO 3 (LNO) bilayers in [111] direction interleaved with four atomic monolayers of LaAlO 3 . DFT+ U optimizations yield two stable solutions: a uniform structure with equivalent NiO 6 ... [Phys. Rev. B 98, 115118] Published Tue Sep 11, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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108

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Tunable electronic and magneto-optical properties of monolayer arsenene: From $\mathrm{G}{\mathrm{W}}_{0}$ approximation to large-scale tight-binding propagation simulations (2018)

Jin Yu, Mikhail I. Katsnelson, and Shengjun Yuan

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-12

Beschreibung: Author(s): Jin Yu, Mikhail I. Katsnelson, and Shengjun Yuan Monolayers of the group called VA elements have attracted great attention with the rising of black phosphorus. Here, we derive a simple tight-binding model for monolayer grey arsenic, referred to as arsenene (ML-As), based on the first-principles calculations within the partially self-consistent G W 0 ... [Phys. Rev. B 98, 115117] Published Tue Sep 11, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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109

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Anisotropic electronic transport and Rashba effect of the two-dimensional electron system in (110) ${\mathrm{SrTiO}}_{3}$-based heterostructures (2018)

K. Wolff, R. Eder, R. Schäfer, R. Schneider, and D. Fuchs

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-12

Beschreibung: Author(s): K. Wolff, R. Eder, R. Schäfer, R. Schneider, and D. Fuchs The two-dimensional electron system in ( 110 ) Al 2 O 3 − δ / SrTiO 3 heterostructures displays anisotropic electronic transport. Largest and lowest conductivity and electron mobility μ are observed along the [001] and [ 1 1 ¯ 0 ] directions, respectively. The anisotropy of the sheet resistance and μ likewise leads... [Phys. Rev. B 98, 125122] Published Tue Sep 11, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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110

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Magnetic, electronic, and transport properties of the high-pressure-synthesized chiral magnets ${\mathrm{Mn}}_{1−x}{\mathrm{Rh}}_{x}\mathrm{Ge}$ (2018)

V. A. Sidorov, A. E. Petrova, N. M. Chtchelkatchev, M. V. Magnitskaya, L. N. Fomicheva, D. A. Salamatin, A. V. Nikolaev, I. P. Zibrov, F. Wilhelm, A. Rogalev, and A. V. Tsvyashchenko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-12

Beschreibung: Author(s): V. A. Sidorov, A. E. Petrova, N. M. Chtchelkatchev, M. V. Magnitskaya, L. N. Fomicheva, D. A. Salamatin, A. V. Nikolaev, I. P. Zibrov, F. Wilhelm, A. Rogalev, and A. V. Tsvyashchenko We report on the structural, magnetic, and transport properties of a set of high-pressure-synthesized compounds Mn 1 − x Rh x Ge ( 0 ≤ x ≤ 1 ) with chiral magnetic ordering. The magnetic and transport properties depend substantially on the concentration of rhodium ( x ) and the pressure. The saturation magnetic m... [Phys. Rev. B 98, 125121] Published Tue Sep 11, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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111

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Band structure interpolation using optimized local orbitals from linear-scaling density functional theory (2018)

L. E. Ratcliff, G. J. Conduit, N. D. M. Hine, and P. D. Haynes

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-12

Beschreibung: Author(s): L. E. Ratcliff, G. J. Conduit, N. D. M. Hine, and P. D. Haynes Several approaches to linear-scaling density functional theory (LS-DFT) that seek to achieve accuracy equivalent to plane-wave methods do so by optimizing in situ a set of local orbitals in terms of which the density matrix can be accurately expressed. These local orbitals, which can also accurately... [Phys. Rev. B 98, 125123] Published Tue Sep 11, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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112

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Anomaly and global inconsistency matching: $θ$ angles, $SU(3)/U{(1)}^{2}$ nonlinear sigma model, $SU(3)$ chains, and generalizations (2018)

Yuya Tanizaki and Tin Sulejmanpasic

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-15

Beschreibung: Author(s): Yuya Tanizaki and Tin Sulejmanpasic We discuss the S U ( 3 ) / [ U ( 1 ) × U ( 1 ) ] nonlinear sigma model in 1+1D and, more broadly, its linearized counterparts. Such theories can be expressed as U ( 1 ) × U ( 1 ) gauge theories and therefore allow for two topological θ angles. These models provide a field theoretic description of the S U ( 3 ) chains. We show ... [Phys. Rev. B 98, 115126] Published Fri Sep 14, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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113

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Robotic-flapper maneuvers and fruitfly turns (2018)

Ruffier, F.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2018-09-14

Schlagwort(e): Engineering

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

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A tailless aerial robotic flapper reveals that flies use torque coupling in rapid banked turns (2018)

Karasek, M., Muijres, F. T., De Wagter, C., Remes, B. D. W., de Croon, G. C. H. E.

American Association for the Advancement of Science (AAAS)

In: Science

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Publikationsdatum: 2018-09-14

Beschreibung: Insects are among the most agile natural flyers. Hypotheses on their flight control cannot always be validated by experiments with animals or tethered robots. To this end, we developed a programmable and agile autonomous free-flying robot controlled through bio-inspired motion changes of its flapping wings. Despite being 55 times the size of a fruit fly, the robot can accurately mimic the rapid escape maneuvers of flies, including a correcting yaw rotation toward the escape heading. Because the robot’s yaw control was turned off, we showed that these yaw rotations result from passive, translation-induced aerodynamic coupling between the yaw torque and the roll and pitch torques produced throughout the maneuver. The robot enables new methods for studying animal flight, and its flight characteristics allow for real-world flight missions.

Schlagwort(e): Engineering

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

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115

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Visualization of electronic topology in ZrSiSe by scanning tunneling microscopy (2018)

Kunliang Bu, Ying Fei, Wenhao Zhang, Yuan Zheng, Jianlan Wu, Fangchu Chen, Xuan Luo, Yuping Sun, Qiunan Xu, Xi Dai, and Yi Yin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-18

Beschreibung: Author(s): Kunliang Bu, Ying Fei, Wenhao Zhang, Yuan Zheng, Jianlan Wu, Fangchu Chen, Xuan Luo, Yuping Sun, Qiunan Xu, Xi Dai, and Yi Yin As emerging topological nodal-line semimetals, the family of ZrSi X ( X = S , Se , Te ) has attracted broad interest in condensed matter physics due to its future applications in spintronics. Here, we apply scanning tunneling microscopy to study the structural symmetry and electronic topology of ZrSiSe. Bias ... [Phys. Rev. B 98, 115127] Published Mon Sep 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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116

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Time-reversal and spatial-reflection symmetry localization anomalies in (2+1)-dimensional topological phases of matter (2018)

Maissam Barkeshli and Meng Cheng

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-18

Beschreibung: Author(s): Maissam Barkeshli and Meng Cheng We study a class of anomalies associated with time-reversal and spatial-reflection symmetry in (2+1)-dimensional bosonic topological phases of matter. In these systems, the topological quantum numbers of the quasiparticles, such as the fusion rules and braiding statistics, possess a Z 2 symmetry whic... [Phys. Rev. B 98, 115129] Published Mon Sep 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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117

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Gaussian fluctuation corrections to a mean-field theory of complex hidden order in ${\mathrm{URu}}_{2}{\mathrm{Si}}_{2}$ (2018)

Pengtao Shen and Maxim Dzero

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-18

Beschreibung: Author(s): Pengtao Shen and Maxim Dzero Hidden-order phase transition in the heavy-fermion superconductor URu 2 Si 2 exhibits the mean-field-like anomaly in temperature dependence of heat capacity. Motivated by this observation, here we explore the impact of the complex order parameter fluctuations on the thermodynamic properties of the hidd... [Phys. Rev. B 98, 125131] Published Mon Sep 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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118

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Theory of spin Bott index for quantum spin Hall states in nonperiodic systems (2018)

Huaqing Huang and Feng Liu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-18

Beschreibung: Author(s): Huaqing Huang and Feng Liu Quantum spin Hall effects (QSHE) arising from electron band topology are usually limited to crystals. Here, the authors extend the concept of QSHE to nonperiodic systems. They derive a spin Bott index to characterize the electronic topology in aperiodic and amorphous systems, and confirm its applicability by realizing the QSHE in quasicrystals. As in crystals, the QSHE in quasicrystals manifests with robust metallic edge states and quantized conductance. Their findings not only provide a better understanding of electronic properties of nonperiodic systems, but also extend the search of the QSH phase to aperiodic and amorphous materials that are experimentally feasible. [Phys. Rev. B 98, 125130] Published Mon Sep 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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119

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Universal quantum criticality in static and Floquet-Majorana chains (2018)

Paolo Molignini, Wei Chen, and R. Chitra

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-18

Beschreibung: Author(s): Paolo Molignini, Wei Chen, and R. Chitra The topological phase transitions in static and periodically driven Kitaev chains are investigated by means of a renormalization group (RG) approach. These transitions, across which the numbers of static or Floquet Majorana edge modes change, are accompanied by divergences of the relevant Berry conn... [Phys. Rev. B 98, 125129] Published Mon Sep 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Observation of cyclotron antiresonance in the topological insulator ${\mathrm{Bi}}_{2}{\mathrm{Te}}_{3}$ (2018)

S. V. Dordevic, Hechang Lei, C. Petrovic, J. Ludwig, Z. Q. Li, and D. Smirnov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-21

Beschreibung: Author(s): S. V. Dordevic, Hechang Lei, C. Petrovic, J. Ludwig, Z. Q. Li, and D. Smirnov We report on the experimental observation of a cyclotron antiresonance in a canonical three-dimensional topological insulator Bi 2 Te 3 . Magnetoreflectance response of single-crystal Bi 2 Te 3 was studied in 18-T magnetic field, and compared to other topological insulators studied before, the main spectra... [Phys. Rev. B 98, 115138] Published Thu Sep 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Asymmetric Cherenkov emission in a topological plasmonic waveguide (2018)

Filipa R. Prudêncio and Mário G. Silveirinha

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-21

Beschreibung: Author(s): Filipa R. Prudêncio and Mário G. Silveirinha Here, we investigate the Cherenkov emission by an array of moving electric charges in the vicinity of a topologically nontrivial gyrotropic material. It is shown that the nonreciprocal material response may result in a robustly asymmetric Cherenkov emission, such that the spectrum of the emitted rad... [Phys. Rev. B 98, 115136] Published Thu Sep 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Topological entanglement entropy of the three-dimensional Kitaev model (2018)

N. C. Randeep and Naveen Surendran

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-21

Beschreibung: Author(s): N. C. Randeep and Naveen Surendran We calculate the topological entanglement entropy (TEE) for a three-dimensional hyperhoneycomb lattice generalization of Kitaev's honeycomb lattice spin model. We find that for this model TEE is not directly determined by the total quantum dimension of the system. This is in contrast to general two-... [Phys. Rev. B 98, 125136] Published Thu Sep 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Spin-orbit-driven electron pairing in two dimensions (2018)

Yasha Gindikin and Vladimir A. Sablikov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-21

Beschreibung: Author(s): Yasha Gindikin and Vladimir A. Sablikov We show that the spin-orbit interaction (SOI) arising due to the in-plane electric field of the Coulomb repulsion between electrons in a two-dimensional quantum well produces an attractive component in the pair interaction Hamiltonian that depends on the spins and momenta of electrons. If the Rashba... [Phys. Rev. B 98, 115137] Published Thu Sep 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Impact of ultrafast transport on the high-energy states of a photoexcited topological insulator (2018)

F. Freyse, M. Battiato, L. V. Yashina, and J. Sánchez-Barriga

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-20

Beschreibung: Author(s): F. Freyse, M. Battiato, L. V. Yashina, and J. Sánchez-Barriga Ultrafast dynamics in three-dimensional topological insulators (TIs) opens new routes for increasing the speed of information transport up to frequencies a thousand times faster than in modern electronics. However, to date, disentangling the exact contributions from bulk and surface transport to the... [Phys. Rev. B 98, 115132] Published Wed Sep 19, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Topological symmetry classes for non-Hermitian models and connections to the bosonic Bogoliubov–de Gennes equation (2018)

Simon Lieu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-20

Beschreibung: Author(s): Simon Lieu The Bernard-LeClair (BL) symmetry classes generalize the Altland-Zirnbauer classes in the absence of Hermiticity. Within the BL scheme, time-reversal and particle-hole symmetry come in two flavors, and “pseudo-Hermiticity” generalizes Hermiticity. We propose that these symmetries are relevant for th... [Phys. Rev. B 98, 115135] Published Wed Sep 19, 2018

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The fracton gauge principle (2018)

Michael Pretko

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-20

Beschreibung: Author(s): Michael Pretko A powerful mechanism for constructing gauge theories is to start from a theory with a global symmetry, then apply the “gauge principle,” which demands that this symmetry hold locally. For example, the global phase rotation of a system of conserved charges can be promoted to a local phase rotation by... [Phys. Rev. B 98, 115134] Published Wed Sep 19, 2018

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Critical strange metal from fluctuating gauge fields in a solvable random model (2018)

Aavishkar A. Patel and Subir Sachdev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-20

Beschreibung: Author(s): Aavishkar A. Patel and Subir Sachdev Building upon techniques employed in the construction of the Sachdev-Ye-Kitaev model, which is a solvable (0 + 1)-dimensional model of a non-Fermi liquid, we develop a solvable infinite-ranged random-hopping model of fermions coupled to fluctuating U ( 1 ) gauge fields. In a specific large- N limit, our... [Phys. Rev. B 98, 125134] Published Wed Sep 19, 2018

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Lossless tensor surface electromagnetic cloaking for large objects in free space (2018)

Do-Hoon Kwon

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-22

Beschreibung: Author(s): Do-Hoon Kwon Electromagnetic cloaking for large objects in free space using a lossless impenetrable tensor impedance surface is proposed. The key enabling feature is enforcement of the pointwise lossless condition via introduction and optimization of surface waves that carry power along the curved bounding surfa... [Phys. Rev. B 98, 125137] Published Fri Sep 21, 2018

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Quantum transport in a compensated semimetal ${\mathrm{W}}_{2}{\mathrm{As}}_{3}$ with nontrivial ${Z}_{2}$ indices (2018)

Yupeng Li, Chenchao Xu, Mingsong Shen, Jinhua Wang, Xiaohui Yang, Xiaojun Yang, Zengwei Zhu, Chao Cao, and Zhu-An Xu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): Yupeng Li, Chenchao Xu, Mingsong Shen, Jinhua Wang, Xiaohui Yang, Xiaojun Yang, Zengwei Zhu, Chao Cao, and Zhu-An Xu We report a topological semimetal W 2 As 3 with a space group C 2 / m . Based on the first-principles calculations, band crossings are partially gapped when spin-orbit coupling is included. The Z 2 indices at the electron filling are [1;111], characterizing a strong topological insulator and topological sur... [Phys. Rev. B 98, 115145] Published Mon Sep 24, 2018

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Breakdown of topological Thouless pumping in the strongly interacting regime (2018)

Masaya Nakagawa, Tsuneya Yoshida, Robert Peters, and Norio Kawakami

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): Masaya Nakagawa, Tsuneya Yoshida, Robert Peters, and Norio Kawakami We elucidate the mechanism for instability of topological Thouless pumping in strongly interacting systems from a viewpoint of symmetry-protected topological phases. If the protecting symmetries of the underlying topological phases change between noninteracting fermions and a bosonic system in the s... [Phys. Rev. B 98, 115147] Published Mon Sep 24, 2018

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Tunneling spectroscopy between one-dimensional helical conductors (2018)

Bernd Braunecker and Pascal Simon

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): Bernd Braunecker and Pascal Simon We theoretically investigate the tunneling spectroscopy of a system of two parallel one-dimensional helical conductors in the interacting, Luttinger liquid regime. We calculate the nonlinear differential conductance as a function of the voltage bias between the conductors and the orbital momentum sh... [Phys. Rev. B 98, 115146] Published Mon Sep 24, 2018

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Enhancement of spin-orbit coupling at manganite surfaces (2018)

S. Valencia, M. J. Calderón, L. López-Mir, Z. Konstantinovic, E. Schierle, E. Weschke, L. Brey, B. Martínez, and Ll. Balcells

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): S. Valencia, M. J. Calderón, L. López-Mir, Z. Konstantinovic, E. Schierle, E. Weschke, L. Brey, B. Martínez, and Ll. Balcells Spin-orbit coupling in magnetic systems lacking inversion symmetry can give rise to nontrivial spin textures. Magnetic thin films and heterostructures are potential candidates for the formation of skyrmions and other noncollinear spin configurations as inversion symmetry is inherently lost at their ... [Phys. Rev. B 98, 115142] Published Mon Sep 24, 2018

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Giant planar Hall effect in the Dirac semimetal $\mathrm{ZrT}{\mathrm{e}}_{5−δ}$ (2018)

P. Li, C. H. Zhang, J. W. Zhang, Y. Wen, and X. X. Zhang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): P. Li, C. H. Zhang, J. W. Zhang, Y. Wen, and X. X. Zhang Recently, giant planar Hall effect originating from chiral anomaly has been predicted in nonmagnetic Dirac/Weyl semimetals. ZrT e 5 is considered to be an intriguing Dirac semimetal at the boundary of weak topological insulators and strong topological insulators, although this claim still remains cont... [Phys. Rev. B 98, 121108(R)] Published Mon Sep 24, 2018

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Effect of low Zn doping on the Verwey transition in magnetite single crystals: Mössbauer spectroscopy and x-ray diffraction (2018)

V. Chlan, J. Żukrowski, A. Bosak, Z. Kąkol, A. Kozłowski, Z. Tarnawski, R. Řezníček, H. Štěpánková, P. Novák, I. Biało, and J. M. Honig

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-25

Beschreibung: Author(s): V. Chlan, J. Żukrowski, A. Bosak, Z. Kąkol, A. Kozłowski, Z. Tarnawski, R. Řezníček, H. Štěpánková, P. Novák, I. Biało, and J. M. Honig To observe, by microscopic probe, how low Zn doping in F e 3 − x Z n x O 4 ( x is below 1%) changes the Verwey transition, we have performed Mössbauer spectroscopy measurements on three single crystalline samples with various Zn doping. In spectra analysis we used the recently published model of Mössbauer dat... [Phys. Rev. B 98, 125138] Published Mon Sep 24, 2018

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Revealing excitonic processes and chemical bonding in $\mathrm{Mo}{\mathrm{S}}_{2}$ by x-ray spectroscopy (2018)

J. C. Woicik, C. Weiland, A. K. Rumaiz, M. Brumbach, N. F. Quackenbush, J. M. Ablett, and E. L. Shirley

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-26

Beschreibung: Author(s): J. C. Woicik, C. Weiland, A. K. Rumaiz, M. Brumbach, N. F. Quackenbush, J. M. Ablett, and E. L. Shirley Electron core-hole processes at absorption edges sport several signatures, primarily in the form of bound states and/or excitonic enhancement. Through analysis of the resonant-Raman Auger effect for the two-dimensional transition-metal dichalcogenide Mo S 2 , we demonstrate that these effects have sign... [Phys. Rev. B 98, 115149] Published Tue Sep 25, 2018

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Unified understanding of symmetry indicators for all internal symmetry classes (2018)

Seishiro Ono and Haruki Watanabe

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-26

Beschreibung: Author(s): Seishiro Ono and Haruki Watanabe The interplay between symmetry and topology in electronic band structures has been one of the central subjects in condensed-matter physics. Recently, it has been getting clear that a wide variety of useful information about the band topology can be extracted by focusing the symmetry representations ... [Phys. Rev. B 98, 115150] Published Tue Sep 25, 2018

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Infrared spectroscopic studies of the topological properties in ${\mathrm{CaMnSb}}_{2}$ (2018)

Ziyang Qiu, Congcong Le, Yaomin Dai, Bing Xu, J. B. He, Run Yang, Genfu Chen, Jiangping Hu, and Xianggang Qiu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): Ziyang Qiu, Congcong Le, Yaomin Dai, Bing Xu, J. B. He, Run Yang, Genfu Chen, Jiangping Hu, and Xianggang Qiu We present temperature-dependent infrared spectroscopic studies of CaMnSb 2 , a proposed three-dimensional topological material. The low plasma edge in the reflectivity spectrum and small Drude component in the optical conductivity indicate a very low carrier density. The low-frequency optical conduct... [Phys. Rev. B 98, 115151] Published Wed Sep 26, 2018

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Symmetry change of Co $3d$ orbital associated with the 500-K spin crossover accompanied by insulator-to-metal transition in ${\mathrm{LaCoO}}_{3}$ (2018)

Y. Kobayashi, Y. Sakurai, N. Tsuji, K. Sato, and K. Asai

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): Y. Kobayashi, Y. Sakurai, N. Tsuji, K. Sato, and K. Asai We have carried out the imaging of the electron momentum density of Co 3 d electrons in LaCoO 3 using x-ray Compton scattering, in order to investigate the electron-orbital states relevant to the spin-crossover phenomenon at around 500 K, where an insulator-metal transition takes place. The electron m... [Phys. Rev. B 98, 115154] Published Wed Sep 26, 2018

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Quantum well structure of a double perovskite superlattice and formation of a spin-polarized two-dimensional electron gas (2018)

S. Samanta, S. B. Mishra, and B. R. K. Nanda

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): S. Samanta, S. B. Mishra, and B. R. K. Nanda Layered oxide heterostructures are the new route to tailor desired electronic and magnetic phases emerging from competing interactions involving strong correlation, orbital hopping, tunneling, and lattice coupling phenomena. Here, we propose a half-metal/insulator superlattice that intrinsically for... [Phys. Rev. B 98, 115155] Published Wed Sep 26, 2018

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Inclusion-exclusion principle for many-body diagrammatics (2018)

Aviel Boag, Emanuel Gull, and Guy Cohen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): Aviel Boag, Emanuel Gull, and Guy Cohen Diagrammatic resummation techniques have recently enabled new classes of quantum Monte Carlo algorithms, but are restricted by the need to sum over factorially large sets of diagrams. Here, the authors present a fast algorithm for summing over the diagrams appearing in Inchworm hybridization expansions. The method relies on the inclusion-exclusion principle to reduce the scaling from factorial to exponential. For the Inchworm hybridization expansion, when compared to the previous state of the art, the new algorithm is shown to provide practical performance gains of approximately two orders of magnitude. [Phys. Rev. B 98, 115152] Published Wed Sep 26, 2018

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Effects of orientation and strain on the topological characteristics of CdTe/$α$-Sn quantum wells (2018)

G. J. de Coster, P. A. Folkes, P. J. Taylor, and O. A. Vail

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): G. J. de Coster, P. A. Folkes, P. J. Taylor, and O. A. Vail It is known that compressive or tensile planar strain determines the band structure topology of the diamond cubic allotrope of tin ( α -Sn) to be either a Dirac semimetal (DSM) or topological insulator (TI), respectively. Using analytical techniques, we show that quantum confinement in negatively stra... [Phys. Rev. B 98, 115153] Published Wed Sep 26, 2018

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Observation of band crossings protected by nonsymmorphic symmetry in the layered ternary telluride ${\mathrm{Ta}}_{3}{\mathrm{SiTe}}_{6}$ (2018)

Takafumi Sato, Zhiwei Wang, Kosuke Nakayama, Seigo Souma, Daichi Takane, Yuki Nakata, Hideaki Iwasawa, Cephise Cacho, Timur Kim, Takashi Takahashi, and Yoichi Ando

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Takafumi Sato, Zhiwei Wang, Kosuke Nakayama, Seigo Souma, Daichi Takane, Yuki Nakata, Hideaki Iwasawa, Cephise Cacho, Timur Kim, Takashi Takahashi, and Yoichi Ando We have performed angle-resolved photoemission spectroscopy of the layered ternary telluride Ta 3 SiTe 6 which is predicted to host nodal lines associated with nonsymmorphic crystal symmetry. We found that the energy bands in the valence-band region show Dirac-like dispersions which present a band dege... [Phys. Rev. B 98, 121111(R)] Published Wed Sep 26, 2018

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Black-hole horizon in the Dirac semimetal ${\mathrm{Zn}}_{2}{\mathrm{In}}_{2}{\mathrm{S}}_{5}$ (2018)

Huaqing Huang, Kyung-Hwan Jin, and Feng Liu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): Huaqing Huang, Kyung-Hwan Jin, and Feng Liu Recently, realizing new fermions, such as type-I and type-II Dirac/Weyl fermions in condensed matter systems, has attracted considerable attention. Here, we show that the transition state from type-I to type-II Dirac fermions can be viewed as a “type-III” Dirac fermion, which exhibits unique charact... [Phys. Rev. B 98, 121110(R)] Published Wed Sep 26, 2018

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Quantum anomalous Hall insulator stabilized by competing interactions (2018)

Shouvik Sur, Shou-Shu Gong, Kun Yang, and Oskar Vafek

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): Shouvik Sur, Shou-Shu Gong, Kun Yang, and Oskar Vafek We study the quantum phases driven by interaction in a semimetal with a quadratic band touching at the Fermi level. By combining the density matrix renormalization group (DMRG), analytical power expanded Gibbs potential method, and the weak coupling renormalization group, we study a spinless fermion... [Phys. Rev. B 98, 125144] Published Wed Sep 26, 2018

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Topological phases in the ${\mathrm{TaSe}}_{3}$ compound (2018)

Simin Nie, Lingyi Xing, Rongying Jin, Weiwei Xie, Zhijun Wang, and Fritz B. Prinz

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): Simin Nie, Lingyi Xing, Rongying Jin, Weiwei Xie, Zhijun Wang, and Fritz B. Prinz Based on first-principles calculations, we show that stoichiometric TaSe 3 , synthesized in space group P 2 1 / m , belongs to a three-dimensional strong topological insulator (TI) phase with Z 2 invariants ( 1 ; 100 ). The calculated surface spectrum shows clearly a single Dirac cone on surfaces, with helical ... [Phys. Rev. B 98, 125143] Published Wed Sep 26, 2018

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Bilayer Haldane model: From trivial band insulator to fractionalized quantum anomalous Hall insulator (2018)

Sopheak Sorn

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-27

Beschreibung: Author(s): Sopheak Sorn Motivated by work on the bulk topological proximity effect and the topological bootstrap, we consider two coupled layers of quantum anomalous Hall (QAH) insulators with opposite signs of time-reversal breaking, which leads to a trivial band insulator at half-filling. We study the impact of interacti... [Phys. Rev. B 98, 125145] Published Wed Sep 26, 2018

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Ab initio study of $A{\mathrm{BiO}}_{3}$ ($A=\mathrm{Ba}$, Sr, Ca) under high pressure (2018)

Andriy Smolyanyuk, Cesare Franchini, and Lilia Boeri

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-28

Beschreibung: Author(s): Andriy Smolyanyuk, Cesare Franchini, and Lilia Boeri Using ab initio crystal structure prediction we study the high-pressure phase diagram of A BiO 3 bismuthates ( A = Ba , Sr, Ca) in a pressure range up to 100 GPa. All compounds show a transition from the low-pressure perovskite structure to highly distorted, low-symmetry phases at high pressures (PD trans... [Phys. Rev. B 98, 115158] Published Thu Sep 27, 2018

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Meyer-Neldel rule in the conductivity of manganite single crystals (2018)

J. Przybytek, V. Markovich, and G. Jung

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): J. Przybytek, V. Markovich, and G. Jung The Meyer-Neldel behavior of conductivity of low-doped manganite La 1 − x Ca x MnO 3 single crystals has been investigated. The evolution of the isokinetic temperature of conductivity, modified by Ca-doping, hydrostatic pressure, and current bias has been determined. In addition, the evolution of isokineti... [Phys. Rev. B 98, 115159] Published Fri Sep 28, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Magnetocrystalline anisotropy in the Kondo-lattice compound ${\mathrm{CeAgAs}}_{2}$ (2018)

Rajib Mondal, Rudheer Bapat, S. K. Dhar, and A. Thamizhavel

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): Rajib Mondal, Rudheer Bapat, S. K. Dhar, and A. Thamizhavel We report on the single-crystal growth and anisotropic physical properties of CeAgAs 2 . The compound crystallizes as an ordered variant of the HfCuSi 2 -type crystal structure and adopts the orthorhombic space group P m c a (No. 57) with two symmetry-inequivalent cerium atomic positions in the unit cell. ... [Phys. Rev. B 98, 115160] Published Fri Sep 28, 2018

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Deorbitalized meta-GGA exchange-correlation functionals in solids (2018)

Daniel Mejia-Rodriguez and S. B. Trickey

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): Daniel Mejia-Rodriguez and S. B. Trickey A procedure for removing explicit orbital dependence from meta-generalized-gradient approximation (meta-GGA) exchange-correlation functionals by converting them into Laplacian-dependent functionals recently was developed by us and shown to be successful in molecules. It uses an approximate kinetic e... [Phys. Rev. B 98, 115161] Published Fri Sep 28, 2018

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Geometrodynamics of electrons in a crystal under position and time-dependent deformation (2018)

Liang Dong and Qian Niu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): Liang Dong and Qian Niu The semiclassical dynamics of Bloch electrons in a crystal under slowly varying deformation is developed in the geometric language of a lattice bundle. Berry curvatures and gradients of energy are introduced in terms of lattice covariant derivatives, with the corresponding connections given by the g... [Phys. Rev. B 98, 115162] Published Fri Sep 28, 2018

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Deconfined criticality from the ${\mathrm{QED}}_{3}$-Gross-Neveu model at three loops (2018)

Bernhard Ihrig, Lukas Janssen, Luminita N. Mihaila, and Michael M. Scherer

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Bernhard Ihrig, Lukas Janssen, Luminita N. Mihaila, and Michael M. Scherer The QED 3 -Gross-Neveu model is a ( 2 + 1 ) -dimensional U ( 1 ) gauge theory involving Dirac fermions and a critical real scalar field. This theory has recently been argued to represent a dual description of the deconfined quantum critical point between Néel and valence bond solid orders in frustrated quantu... [Phys. Rev. B 98, 115163] Published Fri Sep 28, 2018

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Type-I and type-II nodal lines coexistence in the antiferromagnetic monolayer ${\mathrm{CrAs}}_{2}$ (2018)

Busheng Wang, Heng Gao, Qing Lu, Wen; Hui Xie, Yanfeng Ge, Yong-Hong Zhao, Kaicheng Zhang, and Yong Liu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): Busheng Wang, Heng Gao, Qing Lu, WenHui Xie, Yanfeng Ge, Yong-Hong Zhao, Kaicheng Zhang, and Yong Liu Topological nodal line semimetals, hosting one-dimensional Fermi lines with symmetry protection, have become a hot topic in topological quantum matter. Due to the breaking of time reversal symmetry in a magnetic system, nodal lines require protection by additional symmetries. Here, we report the dis... [Phys. Rev. B 98, 115164] Published Fri Sep 28, 2018

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Electronic fingerprints of Cr and V dopants in the topological insulator ${\mathrm{Sb}}_{2}{\mathrm{Te}}_{3}$ (2018)

Wenhan Zhang, Damien West, Seng Huat Lee, Yunsheng Qiu, Cui-Zu Chang, Jagadeesh S. Moodera, Yew San Hor, Shengbai Zhang, and Weida Wu

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Wenhan Zhang, Damien West, Seng Huat Lee, Yunsheng Qiu, Cui-Zu Chang, Jagadeesh S. Moodera, Yew San Hor, Shengbai Zhang, and Weida Wu Ferromagnetic domain behavior has been recently reported in Cr and V codoped topological insulator (TI) films using magnetic imaging, providing direct evidence for long-range ferromagnetic order. The observed robust ferromagnetism explains the significant increase in the anomalous quantum Hall effect (AQHE) in the codoped magnetic TI thin films. To understand the mechanism of such enhancement, it is imperative to investigate the spatial distribution of magnetic dopants and their defect states. Here, the authors report electronic fingerprints of the magnetic dopants Cr and V in Sb 2 Te 3 single crystals using spectroscopy imaging. These results have been reproduced in thin films synthesized by molecular beam epitaxy, which facilitates follow-up investigation of the mechanisms of robust ferromagnetic order and AQHE in Cr and V codoped TI films. [Phys. Rev. B 98, 115165] Published Fri Sep 28, 2018

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Revising the $4f$ symmetry in ${\mathrm{CeCu}}_{2}{\mathrm{Ge}}_{2}$: Soft x-ray absorption and hard x-ray photoemission spectroscopy (2018)

H. Aratani, Y. Nakatani, H. Fujiwara, M. Kawada, Y. Kanai, K. Yamagami, S. Fujioka, S. Hamamoto, K. Kuga, T. Kiss, A. Yamasaki, A. Higashiya, T. Kadono, S. Imada, A. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, A. Yasui, Y. Saitoh, Y. Narumi, K. Kindo, T. Ebihara, and A. Sekiyama

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): H. Aratani, Y. Nakatani, H. Fujiwara, M. Kawada, Y. Kanai, K. Yamagami, S. Fujioka, S. Hamamoto, K. Kuga, T. Kiss, A. Yamasaki, A. Higashiya, T. Kadono, S. Imada, A. Tanaka, K. Tamasaku, M. Yabashi, T. Ishikawa, A. Yasui, Y. Saitoh, Y. Narumi, K. Kindo, T. Ebihara, and A. Sekiyama We present a detailed study on the 4 f ground-state symmetry of the pressure-induced superconductor CeCu 2 Ge 2 probed by soft x-ray absorption and hard x-ray photoemission spectroscopy. The revised Ce 4 f ground states are determined as | Γ 7 〉 = 0.45 | J z = ± 5 2 〉 − 0.55 | ∓ 3 2 〉 with Σ -type in-plane rotational symmetr... [Phys. Rev. B 98, 121113(R)] Published Fri Sep 28, 2018

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Coemergence of Dirac and multi-Weyl topological excitations in pnictide antiperovskites (2018)

Wen Fong Goh and Warren E. Pickett

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-09-29

Beschreibung: Author(s): Wen Fong Goh and Warren E. Pickett The relatively unexplored family of pnictide-based antiperovskites has been shown to harbor prospects for topological phases. Using the example of Ca 3 BiP , we demonstrate a cascade of phases as the initial cubic symmetry is broken successively. Initially a small-gap Z 2 topological insulator, spin-orb... [Phys. Rev. B 98, 125147] Published Fri Sep 28, 2018

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Geometry of projected connections, Zak phase, and electric polarization (2018)

A. S. Sergeev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-03

Beschreibung: Author(s): A. S. Sergeev The concept of the Zak phase lies at the core of the modern theory of electric polarization. It is defined using the components of the Bloch wave functions in a certain basis, which is not captured by the standard expression for Berry potential. We provide a consistent geometric interpretation of th... [Phys. Rev. B 98, 161101(R)] Published Tue Oct 02, 2018

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Edge magnetization and spin transport in an SU(2)-symmetric Kitaev spin liquid (2018)

V. S. de Carvalho, H. Freire, E. Miranda, and R. G. Pereira

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-03

Beschreibung: Author(s): V. S. de Carvalho, H. Freire, E. Miranda, and R. G. Pereira We investigate the edge magnetism and the spin transport properties of an SU(2)-symmetric Kitaev spin liquid (KSL) model put forward by Yao and Lee [ Phys. Rev. Lett. 107 , 087205 (2011) ] on the honeycomb lattice. In this model, the spin degrees of freedom fractionalize into a Z 2 static gauge field an... [Phys. Rev. B 98, 155105] Published Tue Oct 02, 2018

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Probing spin susceptibility of a correlated two-dimensional electron system by transport and magnetization measurements (2018)

V. M. Pudalov, A. Yu. Kuntsevich, M. E. Gershenson, I. S. Burmistrov, and M. Reznikov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-04

Beschreibung: Author(s): V. M. Pudalov, A. Yu. Kuntsevich, M. E. Gershenson, I. S. Burmistrov, and M. Reznikov We report temperature and density dependences of the spin susceptibility of strongly interacting electrons in Si inversion layers. We measured (i) the itinerant electron susceptibility χ * from the Shubnikov-de Haas oscillations in crossed magnetic fields and (ii) thermodynamic susceptibility χ T sens... [Phys. Rev. B 98, 155109] Published Wed Oct 03, 2018

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Ultrafast changes in optical properties of ${\mathrm{SiO}}_{2}$ excited by femtosecond laser at the damage threshold and above (2018)

C. Fourment, B. Chimier, F. Deneuville, D. Descamps, F. Dorchies, G. Duchateau, M.-C. Nadeau, and S. Petit

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-04

Beschreibung: Author(s): C. Fourment, B. Chimier, F. Deneuville, D. Descamps, F. Dorchies, G. Duchateau, M.-C. Nadeau, and S. Petit A time- and polarization-resolved pump-probe reflective interferometry measurement of fused silica excited by a femtosecond laser pulse above the damage threshold is presented. We compare the evolution of both the amplitude and the phase of the reflectivity with a rate equation coupled with a Drude ... [Phys. Rev. B 98, 155110] Published Wed Oct 03, 2018

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Failure of Kohn's theorem and the apparent failure of the $f$-sum rule in intrinsic Dirac-Weyl materials in the presence of a filled Fermi sea (2018)

Robert E. Throckmorton and S. Das Sarma

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-06

Beschreibung: Author(s): Robert E. Throckmorton and S. Das Sarma Kohn's theorem and the f -sum rule are powerful theorems, the first applying to translationally invariant single-band electronic systems with parabolic electronic dispersion relations and the second applying to materials in general, that impose restrictions on the effects of electron-electron interac... [Phys. Rev. B 98, 155112] Published Fri Oct 05, 2018

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Correlation energies of the high-density spin-polarized electron gas to meV accuracy (2018)

Michele Ruggeri, Pablo López Ríos, and Ali Alavi

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-09

Beschreibung: Author(s): Michele Ruggeri, Pablo López Ríos, and Ali Alavi We present a combination of quantum Monte Carlo methods and a finite-size extrapolation framework with which we calculate the thermodynamic limit of the exact correlation energy of the polarized electron gas at high densities to meV accuracy, − 40.44 ( 5 ) and − 31.70 ( 4 ) mHa at r s = 0.5 and 1, respectively... [Phys. Rev. B 98, 161105(R)] Published Mon Oct 08, 2018

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Flux-stabilized Majorana zero modes in coupled one-dimensional Fermi wires (2018)

Chun Chen, Wei Yan, C. S. Ting, Yan Chen, and F. J. Burnell

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-09

Beschreibung: Author(s): Chun Chen, Wei Yan, C. S. Ting, Yan Chen, and F. J. Burnell One promising avenue to study one-dimensional (1D) topological phases is to realize them in synthetic materials such as cold atomic gases. Intriguingly, it is possible to realize Majorana boundary modes in a 1D number-conserving system consisting of two fermionic chains coupled only by pair-hopping ... [Phys. Rev. B 98, 161106(R)] Published Mon Oct 08, 2018

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Tensor network state approach to quantum topological phase transitions and their criticalities of ${\mathbb{Z}}_{2}$ topologically ordered states (2018)

Wen-Tao Xu and Guang-Ming Zhang

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-11

Beschreibung: Author(s): Wen-Tao Xu and Guang-Ming Zhang Due to the absence of local order parameters, it is a challenging task to characterize the quantum topological phase transitions between topologically ordered phases in two dimensions. In this paper, we construct a topologically ordered tensor network wave function with one parameter λ , describing b... [Phys. Rev. B 98, 165115] Published Wed Oct 10, 2018

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Nearly triple nodal point topological phase in half-metallic GdN (2018)

Jinwoong Kim, Heung-Sik Kim, and David Vanderbilt

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-13

Beschreibung: Author(s): Jinwoong Kim, Heung-Sik Kim, and David Vanderbilt Recent developments in topological semimetals open a way to realize relativistic dispersions in condensed-matter systems. One recently studied type of topological feature is the “triple nodal point” where three bands become degenerate. In contrast to Weyl and Dirac nodes, triple nodal points, which ... [Phys. Rev. B 98, 155122] Published Fri Oct 12, 2018

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Topological superconductivity in the Kondo-Kitaev model (2018)

Wonjune Choi, Philipp W. Klein, Achim Rosch, and Yong Baek Kim

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-13

Beschreibung: Author(s): Wonjune Choi, Philipp W. Klein, Achim Rosch, and Yong Baek Kim We investigate possible topological superconductivity in the Kondo-Kitaev model on the honeycomb lattice, where the Kitaev spin liquid is coupled to conduction electrons via the Kondo coupling. We use the self-consistent Abrikosov-fermion mean-field theory to map out the phase diagram. Upon increasi... [Phys. Rev. B 98, 155123] Published Fri Oct 12, 2018

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Unusual magnetoresistance oscillations in preferentially oriented $p$-type polycrystalline $\mathrm{ZrT}{\mathrm{e}}_{5}$ (2018)

M. K. Hooda and C. S. Yadav

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-13

Beschreibung: Author(s): M. K. Hooda and C. S. Yadav Recently, Wang et al. ( arXiv:1704.00995 ) reported quantum oscillation in magnetoresistance with the periodicity in the logarithm of a magnetic field ( B ) for p -type ZrT e 5 . They have ascribed this type of behavior to the discrete scale invariance resulting from Efimov bound states. We have prepared hi... [Phys. Rev. B 98, 165119] Published Fri Oct 12, 2018

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Optical control over bulk excitations in fractional quantum Hall systems (2018)

Tobias Graß, Michael Gullans, Przemyslaw Bienias, Guanyu Zhu, Areg Ghazaryan, Pouyan Ghaemi, and Mohammad Hafezi

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): Tobias Graß, Michael Gullans, Przemyslaw Bienias, Guanyu Zhu, Areg Ghazaryan, Pouyan Ghaemi, and Mohammad Hafezi Local excitations in fractional quantum Hall systems are amongst the most intriguing objects in condensed matter, as they behave like particles of fractional charge and fractional statistics. In order to experimentally reveal these exotic properties and, further, to use such excitations for quantum ... [Phys. Rev. B 98, 155124] Published Mon Oct 15, 2018

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Covariant cubic approximation for many-body electronic systems (2018)

Baruch Rosenstein and Dingping Li

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): Baruch Rosenstein and Dingping Li An approximation scheme determining the excitations of an electronic model on the lattice with pairwise interactions is proposed. A systematic truncation of the set of Dyson-Schwinger equations for correlators, supplemented by a “covariant” calculation of correlators lead to a converging series of a... [Phys. Rev. B 98, 155126] Published Mon Oct 15, 2018

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Parity anomaly in the nonlinear response of nodal-line semimetals (2018)

Alberto Martín-Ruiz and Alberto Cortijo

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): Alberto Martín-Ruiz and Alberto Cortijo Nodal-line semimetals are topological semimetals characterized by one-dimensional band-touching loops protected by the combined symmetry of inversion P and time-reversal T in absence of spin-orbit coupling. These nodal loops can be understood as a one-parameter family of Dirac points exhibiting the ... [Phys. Rev. B 98, 155125] Published Mon Oct 15, 2018

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Low-temperature resistance in metals without inversion center (2018)

V. P. Mineev

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): V. P. Mineev The well known quadratic low-temperature dependence of resistance in ordinary metals habitually serves as the criterium of applicability of the Landau Fermi liquid theory to the description of electron liquid in concrete material. Such a type of behavior is determined by momentum relaxation due to t... [Phys. Rev. B 98, 165121] Published Mon Oct 15, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Dynamical density response and optical conductivity in topological metals (2018)

A. A. Burkov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): A. A. Burkov Topological metals continue to attract attention as novel gapless states of matter. While there by now exists an exhaustive classification of possible topologically nontrivial metallic states, their observable properties, that follow from the electronic structure topology, are less well understood. ... [Phys. Rev. B 98, 165123] Published Mon Oct 15, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Paradoxical extension of the edge states across the topological phase transition due to emergent approximate chiral symmetry in a quantum anomalous Hall system (2018)

Denis R. Candido, Maxim Kharitonov, J. Carlos Egues, and Ewelina M. Hankiewicz

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): Denis R. Candido, Maxim Kharitonov, J. Carlos Egues, and Ewelina M. Hankiewicz In quantum anomalous Hall systems (Chern insulators) the topological Chern number defines, via bulk-boundary correspondence, the number of the edge-state bands that connect the valence and conduction bulk bands. This is the only characteristic of the edge states required by quantum Hall topology. Here, the authors present a paradoxical finding that, in the vicinity of a topological phase transition in a quantum anomalous Hall system, topology nearly always results in a significant extension of the edge-state structure beyond the minimal one required to satisfy the Chern numbers. [Phys. Rev. B 98, 161111(R)] Published Mon Oct 15, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Interface properties and built-in potential profile of a $\phantom{\rule{4pt}{0ex}}\mathrm{LaCr}{\mathrm{O}}_{3}/\mathrm{SrTi}{\mathrm{O}}_{3}$ superlattice determined by standing-wave excited photoemission spectroscopy (2018)

S.-C. Lin, C.-T. Kuo, R. B. Comes, J. E. Rault, J.-P. Rueff, S. Nemšák, A. Taleb, J. B. Kortright, J. Meyer-Ilse, E. Gullikson, P. V. Sushko, S. R. Spurgeon, M. Gehlmann, M. E. Bowden, L. Plucinski, S. A. Chambers, and C. S. Fadley

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-16

Beschreibung: Author(s): S.-C. Lin, C.-T. Kuo, R. B. Comes, J. E. Rault, J.-P. Rueff, S. Nemšák, A. Taleb, J. B. Kortright, J. Meyer-Ilse, E. Gullikson, P. V. Sushko, S. R. Spurgeon, M. Gehlmann, M. E. Bowden, L. Plucinski, S. A. Chambers, and C. S. Fadley LaCr O 3 ( LCO ) / SrTi O 3 ( STO ) heterojunctions are intriguing due to a polar discontinuity along [ 001 ] , exhibiting two distinct and controllable charged interface structures [ ( LaO ) + / ( Ti O 2 ) 0 and ( SrO ) 0 / ( Cr O 2 ) − ] with induced polarization, and a resulting depth-dependent potential. In this study, we have used... [Phys. Rev. B 98, 165124] Published Mon Oct 15, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Collective dynamics of Fermi surface fluctuations in an interacting Weyl metal phase (2018)

Chungwon Jeong and Ki-Seok Kim

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Chungwon Jeong and Ki-Seok Kim Instabilities in a Landau's Fermi-liquid state occur, increasing the strength of interaction parameters in the Landau's Fermi-liquid theory. Introducing both the Berry curvature and chiral anomaly into this theoretical framework, we investigate collective dynamics of Fermi surface fluctuations and r... [Phys. Rev. B 98, 165122] Published Mon Oct 15, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Zitterbewegung and bulk-edge Landau-Zener tunneling in topological insulators (2018)

Gerson J. Ferreira, Renan P. Maciel, Poliana H. Penteado, and J. Carlos Egues

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): Gerson J. Ferreira, Renan P. Maciel, Poliana H. Penteado, and J. Carlos Egues We investigate the ballistic zitterbewegung dynamics and the Landau-Zener tunneling between edge and bulk states of wave packets in two-dimensional topological insulators. In bulk, we use the Ehrenfest theorem to show that an external in-plane electric field not only drifts the packet longitudinally... [Phys. Rev. B 98, 165120] Published Mon Oct 15, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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A rich man's derivation of scaling laws for the Kondo model (2018)

Dmytro Tarasevych, Jan Krieg, and Peter Kopietz

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): Dmytro Tarasevych, Jan Krieg, and Peter Kopietz We show how the one-loop “poor man's scaling” equations for the Kondo model with arbitrary impurity spin can be obtained within the framework of the functional renormalization group approach for quantum spin systems recently developed by Krieg and Kopietz ( arXiv:1807.02524 ). We argue that our method... [Phys. Rev. B 98, 235133] Published Mon Dec 17, 2018

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Quantum geometry of correlated many-body states (2018)

S. R. Hassan, R. Shankar, and Ankita Chakrabarti

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): S. R. Hassan, R. Shankar, and Ankita Chakrabarti We provide a definition of the quantum distances of correlated many-fermion wave functions in terms of the expectation values of certain operators that we call exchange operators. We prove that the distances satisfy the triangle inequalities. We apply our formalism to the one-dimensional t − V model, ... [Phys. Rev. B 98, 235134] Published Mon Dec 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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A. Östlin, L. Vitos, and L. Chioncel

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): A. Östlin, L. Vitos, and L. Chioncel We introduce a computational scheme for calculating the electronic structure of random alloys that includes electronic correlations within the framework of the combined density functional and dynamical mean-field theory. By making use of the particularly simple parametrization of the electron Green'... [Phys. Rev. B 98, 235135] Published Mon Dec 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Matrix product representation of locality preserving unitaries (2018)

M. Burak Şahinoğlu, Sujeet K. Shukla, Feng Bi, and Xie Chen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): M. Burak Şahinoğlu, Sujeet K. Shukla, Feng Bi, and Xie Chen Matrix product representation provides a useful formalism to study not only entangled states but also entangled operators in one dimension. In this paper, we focus on unitary transformations and show that matrix product operators that are unitary provide a necessary and sufficient representation of ... [Phys. Rev. B 98, 245122] Published Mon Dec 17, 2018

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Gapless spin liquid ground state of the spin-$\frac{1}{2}$ ${J}_{1}−{J}_{2}$ Heisenberg model on square lattices (2018)

Wen-Yuan Liu, Shaojun Dong, Chao Wang, Yongjian Han, Hong An, Guang-Can Guo, and Lixin He

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-18

Beschreibung: Author(s): Wen-Yuan Liu, Shaojun Dong, Chao Wang, Yongjian Han, Hong An, Guang-Can Guo, and Lixin He The spin- 1 2 J 1 − J 2 Heisenberg model on square lattices is investigated via the finite projected entangled pair states (PEPS) method. Using the recently developed gradient optimization method combined with Monte Carlo sampling techniques, we are able to obtain the ground state energies that are compet... [Phys. Rev. B 98, 241109(R)] Published Mon Dec 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Electronic structure investigation of a charge density wave coupled to a metal-to-metal transition in ${\mathrm{Ce}}_{3}{\mathrm{Co}}_{4}{\mathrm{Sn}}_{13}$ (2018)

A. Singh, H. Y. Huang, Y. Y. Chin, Y. F. Liao, T. C. Huang, J. Okamoto, W. B. Wu, H. J. Lin, K. D. Tsuei, R. P. Wang, F. M. F. de Groot, C. N. Kuo, H. F. Liu, C. S. Lue, C. T. Chen, D. J. Huang, and A. Chainani

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-19

Beschreibung: Author(s): A. Singh, H. Y. Huang, Y. Y. Chin, Y. F. Liao, T. C. Huang, J. Okamoto, W. B. Wu, H. J. Lin, K. D. Tsuei, R. P. Wang, F. M. F. de Groot, C. N. Kuo, H. F. Liu, C. S. Lue, C. T. Chen, D. J. Huang, and A. Chainani We study the electronic structure of the skutterudite Ce 3 Co 4 Sn 13 , which is known to exhibit a charge density wave (CDW) transition, at temperature T C D W ∼ 160 K, coupled to a metal-to-metal transition. We use temperature dependent hard x-ray photoemission spectroscopy (HAXPES) and x-ray absorption spec... [Phys. Rev. B 98, 235136] Published Tue Dec 18, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Emergent ${D}_{6}$ symmetry in fully relaxed magic-angle twisted bilayer graphene (2018)

M. Angeli, D. Mandelli, A. Valli, A. Amaricci, M. Capone, E. Tosatti, and M. Fabrizio

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-19

Beschreibung: Author(s): M. Angeli, D. Mandelli, A. Valli, A. Amaricci, M. Capone, E. Tosatti, and M. Fabrizio We present a tight-binding calculation of a twisted bilayer graphene at magic angle θ ∼ 1 . 08 ∘ , allowing for full, in- and out-of-plane, relaxation of the atomic positions. The resulting band structure displays, as usual, four narrow minibands around the neutrality point, well separated from all other ... [Phys. Rev. B 98, 235137] Published Tue Dec 18, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Luttinger liquid and charge density wave phases in a spinless fermion wire on a semiconducting substrate (2018)

Anas Abdelwahab and Eric Jeckelmann

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-19

Beschreibung: Author(s): Anas Abdelwahab and Eric Jeckelmann An interacting spinless fermion wire coupled to a three-dimensional (3D) semiconducting substrate is approximated by a narrow ladder model (NLM) with varying number of legs. We compute density distributions, gaps, charge density wave (CDW) order parameters, correlation functions, and the central cha... [Phys. Rev. B 98, 235138] Published Tue Dec 18, 2018

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Spin-orbit coupling driven insulating state in hexagonal iridates $\mathrm{S}{\mathrm{r}}_{3}M\mathrm{Ir}{\mathrm{O}}_{6}$ ($M=\mathrm{Sr},\phantom{\rule{0.28em}{0ex}}\mathrm{Na},\phantom{\rule{0.28em}{0ex}}\mathrm{Li}$) (2018)

Xing Ming, Xiangang Wan, Carmine Autieri, Jianfeng Wen, and Xiaojun Zheng

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-19

Beschreibung: Author(s): Xing Ming, Xiangang Wan, Carmine Autieri, Jianfeng Wen, and Xiaojun Zheng The spin-orbit coupling (SOC) interactions, electron-correlation effects, and Hund coupling cooperate and compete with each other, leading to novel properties, quantum phase, and nontrivial topological electronic behavior in iridium oxides. Because of the well-separated IrO 6 octahedra approaching cu... [Phys. Rev. B 98, 245123] Published Tue Dec 18, 2018

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Scaling theory of entanglement entropy in confinements near quantum critical points (2018)

Xuanmin Cao, Qijun Hu, and Fan Zhong

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-19

Beschreibung: Author(s): Xuanmin Cao, Qijun Hu, and Fan Zhong We propose a unified scaling theory of entanglement entropy in the confinements of finite bond dimensions, dynamics, and system sizes. In the theory, the recently introduced finite-entanglement scaling is generalized to the dynamics subjected to a linear driving along with a finite system size. Comp... [Phys. Rev. B 98, 245124] Published Tue Dec 18, 2018

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Antiferromagnetic phase of the Kondo insulator (2018)

R. Eder and P. Wróbel

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): R. Eder and P. Wróbel We discuss the quasiparticle band structure of the antiferromagnetic phase of the planar Kondo lattice model with a half-filled conduction band, the so-called Kondo insulator. The band structure is obtained by the bond fermion technique, and good agreement is obtained with the single-particle spectr... [Phys. Rev. B 98, 245125] Published Wed Dec 19, 2018

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Large-gap quantum anomalous Hall phase in hexagonal organometallic frameworks (2018)

Yuanjun Jin, Zhongjia Chen, Bowen Xia, Yujun Zhao, Rui Wang, and Hu Xu

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): Yuanjun Jin, Zhongjia Chen, Bowen Xia, Yujun Zhao, Rui Wang, and Hu Xu The nontrivial band gap plays a critical role in quantum anomalous Hall (QAH) insulators. In this work, we propose that the intrinsic QAH phase with sizable band gaps up to 367 meV is achieved in two-dimensional hexagonal organometallic frameworks (HOMFs). Based on first-principles calculations and ... [Phys. Rev. B 98, 245127] Published Wed Dec 19, 2018

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Dependence of band structure and exciton properties of encapsulated ${\mathrm{WSe}}_{2}$ monolayers on the hBN-layer thickness (2018)

Iann C. Gerber and Xavier Marie

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): Iann C. Gerber and Xavier Marie The optical properties of two-dimensional transition-metal dichalcogenide monolayers, such as MoS 2 or WSe 2 are dominated by excitons, Coulomb bound electron-hole pairs. Screening effects due to the presence of hexagonal-boron nitride (hBN) surrounding layers have been investigated by solving the Bet... [Phys. Rev. B 98, 245126] Published Wed Dec 19, 2018

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Search for exact local Hamiltonians for general fractional quantum Hall states (2018)

G. J. Sreejith, M. Fremling, Gun Sang Jeon, and J. K. Jain

American Physical Society (APS)

In: Physical Review B

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Beschreibung: Author(s): G. J. Sreejith, M. Fremling, Gun Sang Jeon, and J. K. Jain We report on our systematic attempts at finding local interactions for which the lowest-Landau-level projected composite-fermion wave functions are the unique zero energy ground states. For this purpose, we study in detail the simplest nontrivial system beyond the Laughlin states, namely, bosons at ... [Phys. Rev. B 98, 235139] Published Wed Dec 19, 2018

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Group-theoretical classification of multipole order: Emergent responses and candidate materials (2018)

Hikaru Watanabe and Youichi Yanase

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): Hikaru Watanabe and Youichi Yanase The multipole moment is an established concept of electrons in solids. Entanglement of spin, orbital, and sublattice degrees of freedom is described by the multipole moment, and spontaneous multipole order is a ubiquitous phenomenon in strongly correlated electron systems. In this paper, we present ... [Phys. Rev. B 98, 245129] Published Wed Dec 19, 2018

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Quantum critical behavior of two-dimensional Fermi systems with quadratic band touching (2018)

Shouryya Ray, Matthias Vojta, and Lukas Janssen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-20

Beschreibung: Author(s): Shouryya Ray, Matthias Vojta, and Lukas Janssen At low temperatures, isotropic two-dimensional Fermi systems with quadratic band touching are unstable with respect to a symmetry-broken ground state when interactions are taken into account. Here, the authors demonstrate that in a setup with threefold symmetry only - as realized, for instance, in bilayer graphene - interactions induce a splitting of the quadratic band touching into four Dirac cones. This shifts the instability to a finite interaction strength and leads to a quantum critical point with emergent Lorentz invariance. [Phys. Rev. B 98, 245128] Published Wed Dec 19, 2018

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Strongly anisotropic spin relaxation in the neutral silicon vacancy center in diamond (2018)

B. C. Rose, G. Thiering, A. M. Tyryshkin, A. M. Edmonds, M. L. Markham, A. Gali, S. A. Lyon, and N. P. de Leon

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): B. C. Rose, G. Thiering, A. M. Tyryshkin, A. M. Edmonds, M. L. Markham, A. Gali, S. A. Lyon, and N. P. de Leon Color centers in diamond are a promising platform for quantum technologies, and understanding their interactions with the environment is crucial for these applications. We report a study of spin-lattice relaxation ( T 1 ) of the neutral charge state of the silicon vacancy center in diamond. Above 20 K,... [Phys. Rev. B 98, 235140] Published Thu Dec 20, 2018

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Rotation of terahertz radiation due to phonon-mediated magnetoelectric coupling in chiral selenium (2018)

Anirban Pal, Sharmila N. Shirodkar, Prathamesh Deshmukh, Harshad Surdi, Bagvanth R. Sangala, S. S. Prabhu, Kailash C. Rustagi, Umesh V. Waghmare, and Pushan Ayyub

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): Anirban Pal, Sharmila N. Shirodkar, Prathamesh Deshmukh, Harshad Surdi, Bagvanth R. Sangala, S. S. Prabhu, Kailash C. Rustagi, Umesh V. Waghmare, and Pushan Ayyub The trigonal form of selenium (t-Se) has an unusual, quasi-one-dimensional, chiral crystal structure. First-principles calculations have helped us uncover a polar, optic phonon in t-Se that exhibits a diagonal magnetoelectric coupling with the electric field of the incident THz radiation, and induce... [Phys. Rev. B 98, 235141] Published Thu Dec 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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Hall conductance of a non-Hermitian Chern insulator (2018)

Yu Chen and Hui Zhai

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): Yu Chen and Hui Zhai In this paper, we study the Hall conductance for a non-Hermitian Chern insulator and quantitatively describe how the Hall conductance deviates from a quantized value. We show the effects of the non-Hermitian terms on the Hall conductance from two aspects. On one hand, it broadens the density of stat... [Phys. Rev. B 98, 245130] Published Thu Dec 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Artificial SU(3) spin-orbit coupling and exotic Mott insulators (2018)

Mohsen Hafez-Torbati and Walter Hofstetter

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): Mohsen Hafez-Torbati and Walter Hofstetter Motivated by recent progress in the realization of artificial gauge fields and SU( N ) Mott insulators using alkaline-earth-like atoms in optical lattices, we develop an unbiased SU( N ) real-space dynamical mean-field theory approach to study the effect of spin-orbit coupling and on-site Hubbard intera... [Phys. Rev. B 98, 245131] Published Thu Dec 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Revealing the hidden order in ${\mathrm{BaTi}}_{2}{\mathrm{As}}_{2}\mathrm{O}$ via nuclear magnetic resonance (2018)

D. W. Song, J. Li, D. Zhao, L. K. Ma, L. X. Zheng, S. J. Li, L. P. Nie, X. G. Luo, Z. P. Yin, T. Wu, and X. H. Chen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): D. W. Song, J. Li, D. Zhao, L. K. Ma, L. X. Zheng, S. J. Li, L. P. Nie, X. G. Luo, Z. P. Yin, T. Wu, and X. H. Chen In low-dimensional metallic systems, lattice distortion is usually coupled to a density-wave-like electronic instability due to Fermi-surface nesting (FSN) and strong electron-phonon coupling [M. D. Johannes and I. I. Mazin, Phys. Rev. B 77 , 165135 (2008) ]. However, the ordering of other electronic ... [Phys. Rev. B 98, 235142] Published Thu Dec 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Algebraic approach to fractional quantum Hall effect (2018)

Dung Xuan Nguyen and Dam Thanh Son

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): Dung Xuan Nguyen and Dam Thanh Son We construct an algebraic description for the ground state and for the static response of the quantum Hall plateaus with a filling factor ν = N / ( 2 N + 1 ) in the large N limit. By analyzing the algebra of the fluctuations of the shape of the Fermi surface of the composite fermions, we find the explicit fo... [Phys. Rev. B 98, 241110(R)] Published Thu Dec 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Single-crystal investigation of the proposed type-II Weyl semimetal CeAlGe (2018)

H. Hodovanets, C. J. Eckberg, P. Y. Zavalij, H. Kim, W.-C. Lin, M. Zic, D. J. Campbell, J. S. Higgins, and J. Paglione

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-12-21

Beschreibung: Author(s): H. Hodovanets, C. J. Eckberg, P. Y. Zavalij, H. Kim, W.-C. Lin, M. Zic, D. J. Campbell, J. S. Higgins, and J. Paglione We present details of materials synthesis, crystal structure, and anisotropic magnetic properties of single crystals of CeAlGe, a proposed type-II Weyl semimetal. Single-crystal x-ray diffraction confirms that CeAlGe forms in a noncentrosymmetric I 4 1 m d space group, in line with predictions of nontri... [Phys. Rev. B 98, 245132] Published Thu Dec 20, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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Coupling between dynamic magnetic and charge-order correlations in the cuprate superconductor ${\mathrm{Nd}}_{2−x}{\mathrm{Ce}}_{x}{\mathrm{CuO}}_{4}$ (2018)

E. H. da Silva Neto, M. Minola, B. Yu, W. Tabis, M. Bluschke, D. Unruh, H. Suzuki, Y. Li, G. Yu, D. Betto, K. Kummer, F. Yakhou, N. B. Brookes, M. Le Tacon, M. Greven, B. Keimer, and A. Damascelli

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2018-10-18

Beschreibung: Author(s): E. H. da Silva Neto, M. Minola, B. Yu, W. Tabis, M. Bluschke, D. Unruh, H. Suzuki, Y. Li, G. Yu, D. Betto, K. Kummer, F. Yakhou, N. B. Brookes, M. Le Tacon, M. Greven, B. Keimer, and A. Damascelli Charge order has now been observed in several cuprate high-temperature superconductors. We report a resonant inelastic x-ray scattering experiment on the electron-doped cuprate Nd 2 − x Ce x Cu O 4 that demonstrates the existence of dynamic correlations at the charge-order wave vector. Upon cooling we obser... [Phys. Rev. B 98, 161114(R)] Published Wed Oct 17, 2018

Schlagwort(e): Electronic structure and strongly correlated systems

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