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Coulomb-induced instabilities of nodal surfaces (2018)

Pavel A. Volkov and Sergej Moroz

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-14

Description: Author(s): Pavel A. Volkov and Sergej Moroz We consider the stability of nodal surfaces in fermionic band systems with respect to the Coulomb repulsion. It is shown that nodal surfaces at the Fermi level are gapped out at low temperatures due to emergent particle-hole orders. Energy dispersion of the nodal surface suppresses the instability t... [Phys. Rev. B 98, 241107(R)] Published Thu Dec 13, 2018

Keywords: Electronic structure and strongly correlated systems

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Parity-mixing superconducting phase in the Rashba-Hubbard model and its topological properties from dynamical mean-field theory (2018)

Xiancong Lu and D. Sénéchal

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-14

Description: Author(s): Xiancong Lu and D. Sénéchal We investigate parity-mixing superconductivity in the two-dimensional Hubbard model with Rashba spin-orbit coupling, using cellular dynamical mean-field theory (CDMFT). A superconducting state with mixed singlet d -wave and triplet p -wave character is found in a wide range of doping. The singlet comp... [Phys. Rev. B 98, 245118] Published Thu Dec 13, 2018

Keywords: Electronic structure and strongly correlated systems

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Localization of Interacting Dirac Fermions (2018)

Tianxing Ma, Lufeng Zhang, Chia-Chen Chang, Hsiang-Hsuan Hung, and Richard T. Scalettar

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-03-13

Description: Author(s): Tianxing Ma, Lufeng Zhang, Chia-Chen Chang, Hsiang-Hsuan Hung, and Richard T. Scalettar Using exact quantum Monte Carlo calculations, we examine the interplay between localization of electronic states driven by many-body correlations and that by randomness in a two-dimensional system featuring linearly vanishing density of states at the Fermi level. A novel disorder-induced nonmagnetic... [Phys. Rev. Lett. 120, 116601] Published Mon Mar 12, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Measurement of cross sections and isomeric cross-section ratios for the $(n,2n)$ reactions on $^{196,198}\mathrm{Hg}$ at energies between 13 and 15 MeV (2018)

Junhua Luo, Li Jiang, and Long He

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-07-26

Description: Author(s): Junhua Luo, Li Jiang, and Long He The ( n , 2 n ) cross sections and their isomeric ratios ( σ m / σ g ) in the 13–15 MeV neutron energy range have been measured for Hg 196 , 198 by an activation and offline γ-ray spectrometric technique using the Pd-300 Neutron Generator at the Chinese Academy of Engineering Physics (CAEP). Natural Hg samples an... [Phys. Rev. C 98, 014619] Published Wed Jul 25, 2018

Keywords: Nuclear Reactions

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Calculation of a complete set of spin observables for proton elastic scattering from stable and unstable nuclei (2018)

W. A. Yahya, B. I. S. van der Ventel, B. C. Kimene Kaya, and R. A. Bark

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-07-26

Description: Author(s): W. A. Yahya, B. I. S. van der Ventel, B. C. Kimene Kaya, and R. A. Bark A microscopic study of proton elastic scattering from unstable nuclei at intermediate energies using a relativistic formalism is presented. We have employed both the original relativistic impulse approximation (IA1) and the generalized impulse approximation (IA2) formalisms to calculate the relativi... [Phys. Rev. C 98, 014620] Published Wed Jul 25, 2018

Keywords: Nuclear Reactions

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Attractive Fermi polarons at nonzero temperatures with a finite impurity concentration (2018)

Hui Hu, Brendan C. Mulkerin, Jia Wang, and Xia-Ji Liu

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-07-26

Description: Author(s): Hui Hu, Brendan C. Mulkerin, Jia Wang, and Xia-Ji Liu We theoretically investigate how quasiparticle properties of an attractive Fermi polaron are affected by nonzero temperature and finite impurity concentration in three dimensions and in free space. By applying both non-self-consistent and self-consistent many-body T -matrix theories, we calculate the... [Phys. Rev. A 98, 013626] Published Wed Jul 25, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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First measurement of the $\mathrm{Ti}(e,{e}^{′})X$ cross section at Jefferson Lab (2018)

H. Dai et al. (Jefferson Lab Hall A Collaboration)

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-07-26

Description: Author(s): H. Dai et al. (Jefferson Lab Hall A Collaboration) To probe CP violation in the leptonic sector using GeV energy neutrino beams in current and future experiments using argon detectors, precise models of the complex underlying neutrino and antineutrino interactions are needed. The E12-14-012 experiment at Jefferson Lab Hall A was designed to perform ... [Phys. Rev. C 98, 014617] Published Wed Jul 25, 2018

Keywords: Nuclear Reactions

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Photon-Number-Resolved Measurement of an Exciton-Polariton Condensate (2018)

M. Klaas, E. Schlottmann, H. Flayac, F. P. Laussy, F. Gericke, M. Schmidt, M. v. Helversen, J. Beyer, S. Brodbeck, H. Suchomel, S. Höfling, S. Reitzenstein, and C. Schneider

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-07-26

Description: Author(s): M. Klaas, E. Schlottmann, H. Flayac, F. P. Laussy, F. Gericke, M. Schmidt, M. v. Helversen, J. Beyer, S. Brodbeck, H. Suchomel, S. Höfling, S. Reitzenstein, and C. Schneider By counting the photons emitted from a microcavity, researchers shed light on the nature of an exotic condensate of quasiparticles contained in the cavity. [Phys. Rev. Lett. 121, 047401] Published Wed Jul 25, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Spin-1 topological monopoles in the parameter space of ultracold atoms (2018)

Haiping Hu and Chuanwei Zhang

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-07-27

Description: Author(s): Haiping Hu and Chuanwei Zhang A magnetic monopole is a hypothetical elementary particle with an isolated magnetic pole. Its existence would directly lead to the quantization of electric charges. In recent years, analogs of magnetic monopoles, represented by topological defects in parameter spaces, have been studied in a wide ran... [Phys. Rev. A 98, 013627] Published Thu Jul 26, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Resilience of Majorana fermions in the face of disorder (2018)

Alireza Habibi, S. A. Jafari, and S. Rouhani

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-27

Description: Author(s): Alireza Habibi, S. A. Jafari, and S. Rouhani We elucidate the reduction of the winding number caused by the on-site disorder in a next-nearest-neighbor XY model. When disorder becomes strong enough, Majorana edge modes become critically extended, beyond which they collapse into Anderson localized (AL) states in the bulk, resulting in a topolog... [Phys. Rev. B 98, 035142] Published Thu Jul 26, 2018

Keywords: Electronic structure and strongly correlated systems

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Density-functional theory for systems with noncollinear spin: Orbital-dependent exchange-correlation functionals and their application to the Hubbard dimer (2018)

Carsten A. Ullrich

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-27

Description: Author(s): Carsten A. Ullrich To describe noncollinear magnetism in systems such as spiral ferromagnets or spin-frustrated molecules, density-functional methods need to give a proper account of the interplay between broken spin symmetries and exchange-correlation many-body effects. Here, the author develops a class of orbital-dependent exchange-correlation functionals for systems with noncollinear spin, treating correlation via a self-consistent scheme inspired by the Singwi-Tosi-Land-Sjölander method. The approach is applied to a very simple yet nontrivial benchmark system, the asymmetric half-filled Hubbard dimer, and is found to perform well, particularly in the weakly to moderately correlated regime. [Phys. Rev. B 98, 035140] Published Thu Jul 26, 2018

Keywords: Electronic structure and strongly correlated systems

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A simple generalized gradient approximation for the noninteracting kinetic energy density functional (2018)

Kai Luo, Valentin V. Karasiev, and S. B. Trickey

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-27

Description: Author(s): Kai Luo, Valentin V. Karasiev, and S. B. Trickey A simple, unconventional, nonempirical, constraint-based orbital-free generalized gradient approximation (GGA) noninteracting kinetic energy density functional is presented along with illustrative applications. The innovation is adaptation of constraint-based construction to the essential properties... [Phys. Rev. B 98, 041111(R)] Published Thu Jul 26, 2018

Keywords: Electronic structure and strongly correlated systems

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Nonadiabatic coupling effects in ${\mathrm{MgB}}_{2}$ reexamined (2018)

Dino Novko

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-27

Description: Author(s): Dino Novko The unusual Raman spectrum of MgB 2 and its formidable temperature dependence are successfully reproduced by means of a parameter-free ab initio nonadiabatic theory that accounts for the electron-hole pair scattering mechanisms with the system phonons. This example turns out to be a prototypical case... [Phys. Rev. B 98, 041112(R)] Published Thu Jul 26, 2018

Keywords: Electronic structure and strongly correlated systems

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The $(n,2n)$ reaction for the lightest stable erbium isotope $^{162}\mathrm{Er}$ from reaction threshold up to 19 MeV (2018)

E. Georgali, Z. Eleme, N. Patronis, X. Aslanoglou, M. Axiotis, M. Diakaki, V. Foteinou, S. Harissopulos, A. Kalamara, M. Kokkoris, A. Lagoyannis, N. G Nicolis, G. Provatas, A. Stamatopoulos, S. Stoulos, A. Tsinganis, E. Vagena, R. Vlastou, and S. M. Vogiatzi

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-07-27

Description: Author(s): E. Georgali, Z. Eleme, N. Patronis, X. Aslanoglou, M. Axiotis, M. Diakaki, V. Foteinou, S. Harissopulos, A. Kalamara, M. Kokkoris, A. Lagoyannis, N. G Nicolis, G. Provatas, A. Stamatopoulos, S. Stoulos, A. Tsinganis, E. Vagena, R. Vlastou, and S. M. Vogiatzi The Er 162 ( n , 2 n ) Er 161 reaction cross section ( E t h = 9.26 MeV ) was measured at six incident neutron beam energies by means of the activation technique. Two energy regions were covered in the present work: the near-threshold energies between 10.7 and 11.3 MeV, as well as the higher energies from 17.1 up t... [Phys. Rev. C 98, 014622] Published Thu Jul 26, 2018

Keywords: Nuclear Reactions

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Detecting Superconductivity in the High Pressure Hydrides and Metallic Hydrogen from Optical Properties (2018)

J. P. Carbotte, E. J. Nicol, and T. Timusk

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-07-27

Description: Author(s): J. P. Carbotte, E. J. Nicol, and T. Timusk We present a new technique for measuring the critical temperature T c in the high pressure, high T c electron-phonon-driven superconducting hydrides. This technique does not require connecting leads to the sample. In the region of the absorption spectrum above the sum of the optical gap and maximum ph... [Phys. Rev. Lett. 121, 047002] Published Thu Jul 26, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Orbital-dependent correlations in ${\mathrm{PuCoGa}}_{5}$ (2018)

W. H. Brito, S. Choi, Y. X. Yao, and G. Kotliar

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-28

Description: Author(s): W. H. Brito, S. Choi, Y. X. Yao, and G. Kotliar We investigate the normal state of the superconducting compound PuCoGa 5 using the combination of density functional theory (DFT) and dynamical mean-field theory (DMFT), with the continuous time quantum Monte Carlo (CTQMC) and the vertex-corrected one-crossing approximation (OCA) as the impurity solv... [Phys. Rev. B 98, 035143] Published Fri Jul 27, 2018

Keywords: Electronic structure and strongly correlated systems

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Unusual magnetotransport in holmium monoantimonide (2018)

Yi-Yan Wang (王义炎), Lin-Lin Sun (孙琳琳), Sheng Xu (徐升), Yuan Su (苏园), and Tian-Long Xia (夏天龙)

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-28

Description: Author(s): Yi-Yan Wang (王义炎), Lin-Lin Sun (孙琳琳), Sheng Xu (徐升), Yuan Su (苏园), and Tian-Long Xia (夏天龙) We report the magnetotransport properties of HoSb, a semimetal with antiferromagnetic ground state. HoSb shows extremely large magnetoresistance (XMR) and Shubnikov-de Haas (SdH) oscillation at low temperature and high magnetic field. Different from previous reports in other rare earth monopnictides... [Phys. Rev. B 98, 045137] Published Fri Jul 27, 2018

Keywords: Electronic structure and strongly correlated systems

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Charge redistribution in correlated heterostuctures within nonequilibrium real-space dynamical mean-field theory (2018)

Irakli Titvinidze, Max E. Sorantin, Antonius Dorda, Wolfgang von der Linden, and Enrico Arrigoni

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-28

Description: Author(s): Irakli Titvinidze, Max E. Sorantin, Antonius Dorda, Wolfgang von der Linden, and Enrico Arrigoni We address the steady-state behavior of a system consisting of several correlated monoatomic layers sandwiched between two metallic leads under the influence of a bias voltage. In particular, we investigate the interplay of the local Hubbard and the long-range Coulomb interaction on the charge redis... [Phys. Rev. B 98, 035146] Published Fri Jul 27, 2018

Keywords: Electronic structure and strongly correlated systems

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Topological invariants in dissipative extensions of the Su-Schrieffer-Heeger model (2018)

Felix Dangel, Marcel Wagner, Holger Cartarius, Jörg Main, and Günter Wunner

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-07-28

Description: Author(s): Felix Dangel, Marcel Wagner, Holger Cartarius, Jörg Main, and Günter Wunner We investigate dissipative extensions of the Su-Schrieffer-Heeger model with regard to different approaches of modeling dissipation. In doing so, we use two distinct frameworks to describe the gain and loss of particles: One uses Lindblad operators within the scope of Lindblad master equations, and ... [Phys. Rev. A 98, 013628] Published Fri Jul 27, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Many-body stabilization of a resonant $p$-wave Fermi gas in one dimension (2018)

Lei Pan, Shu Chen, and Xiaoling Cui

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-07-31

Description: Author(s): Lei Pan, Shu Chen, and Xiaoling Cui Using the asymptotic Bethe ansatz, we study the stabilization problem of the one-dimensional spin-polarized Fermi gas confined in a hard-wall potential with a tunable p -wave scattering length and finite effective range. We find that the interplay of two factors, i.e., the finite interaction range an... [Phys. Rev. A 98, 011603(R)] Published Mon Jul 30, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Antiferroelectric distortion with anomalous phonon softening in the excitonic insulator ${\mathrm{Ta}}_{2}{\mathrm{NiSe}}_{5}$ (2018)

Akitoshi Nakano, Takumi Hasegawa, Shinya Tamura, Naoyuki Katayama, Satoshi Tsutsui, and Hiroshi Sawa

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-31

Description: Author(s): Akitoshi Nakano, Takumi Hasegawa, Shinya Tamura, Naoyuki Katayama, Satoshi Tsutsui, and Hiroshi Sawa Ta 2 NiSe 5 is considered a promising excitonic insulator (EI) candidate, in which the EI state is due to Coulomb interaction between electrons and holes. In Ta 2 NiSe 5 , the role of phonons is significant since the EI transition is accompanied by an orthorhombic-to-monoclinic structural transition at T s = ... [Phys. Rev. B 98, 045139] Published Mon Jul 30, 2018

Keywords: Electronic structure and strongly correlated systems

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Planar Hall effect in the type-II Weyl semimetal ${T}_{d}\text{−}\mathrm{MoT}{\mathrm{e}}_{2}$ (2018)

F. C. Chen, X. Luo, J. Yan, Y. Sun, H. Y. Lv, W. J. Lu, C. Y. Xi, P. Tong, Z. G. Sheng, X. B. Zhu, W. H. Song, and Y. P. Sun

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-31

Description: Author(s): F. C. Chen, X. Luo, J. Yan, Y. Sun, H. Y. Lv, W. J. Lu, C. Y. Xi, P. Tong, Z. G. Sheng, X. B. Zhu, W. H. Song, and Y. P. Sun Topological Weyl semimetals (WSMs), a new quantum state of matter, provide the realization of relativistic Weyl fermions in solid-state physics. The appearance of the Weyl nodes will demonstrate novel transport phenomena related to the chiral anomaly. Theoretical prediction hints that the giant plan... [Phys. Rev. B 98, 041114(R)] Published Mon Jul 30, 2018

Keywords: Electronic structure and strongly correlated systems

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Ultrafast destruction and recovery of the spin density wave order in iron-based pnictides: A multipulse optical study (2018)

M. Naseska, A. Pogrebna, G. Cao, Z. A. Xu, D. Mihailovic, and T. Mertelj

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-31

Description: Author(s): M. Naseska, A. Pogrebna, G. Cao, Z. A. Xu, D. Mihailovic, and T. Mertelj We report on a systematic excitation-density-dependent all-optical femtosecond time-resolved study of the spin density wave state in iron-based superconductors. The destruction and recovery dynamics are measured by means of the standard and a multipulse pump-probe technique. The experimental data ar... [Phys. Rev. B 98, 035148] Published Mon Jul 30, 2018

Keywords: Electronic structure and strongly correlated systems

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Measurement of $^{232}\mathrm{Th}(n,γ)$ reaction cross sections in the neutron energy range of 11–19 MeV (2018)

Siddharth Parashari, S. Mukherjee, A. P. Singh, Vibha Vansola, H. Naik, B. K. Nayak, Rajnikant Makwana, S. V. Suryanarayana, N. L. Singh, Mayur Mehta, Y. S. Sheela, M. Karkera, R. D. Chauhan, and S. C. Sharma

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-07-31

Description: Author(s): Siddharth Parashari, S. Mukherjee, A. P. Singh, Vibha Vansola, H. Naik, B. K. Nayak, Rajnikant Makwana, S. V. Suryanarayana, N. L. Singh, Mayur Mehta, Y. S. Sheela, M. Karkera, R. D. Chauhan, and S. C. Sharma The cross sections for the Th 232 ( n , γ ) reaction have been measured in the neutron energy range of 11–19 MeV by using activation and offline γ -ray spectrometric techniques. The neutrons of desired energy were obtained by the Li 7 ( p , n ) reaction using a proton beam of 13–21 MeV from the 14UD BARC-TIFR Pe... [Phys. Rev. C 98, 014625] Published Mon Jul 30, 2018

Keywords: Nuclear Reactions

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Effects of the initialization of nucleon momentum in heavy-ion collisions at medium energies (2018)

Zu-Xing Yang, Xiao-Hua Fan, Gao-Chan Yong, and Wei Zuo

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-07-31

Description: Author(s): Zu-Xing Yang, Xiao-Hua Fan, Gao-Chan Yong, and Wei Zuo Based on the isospin-dependent transport model Boltzmann-Uehling-Uhlenbeck (IBUU), effects of the difference of the high momentum tails (HMTs) of nucleon momentum distribution in colliding nuclei on some isospin-sensitive observables are studied in the Au 197 + Au 197 reactions at incident beam energy o... [Phys. Rev. C 98, 014623] Published Mon Jul 30, 2018

Keywords: Nuclear Reactions

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Toward an understanding of the anomaly in charge yield of Mo and Sn fragments in the fission reaction $^{238}\mathrm{U}(n,f$) (2018)

H. Paşca, A. V. Andreev, G. G. Adamian, N. V. Antonenko, and D. Lacroix

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-07-31

Description: Author(s): H. Paşca, A. V. Andreev, G. G. Adamian, N. V. Antonenko, and D. Lacroix Using the improved scission-point model, the charge distribution of fission fragments is studied in neutron-induced fission of the U 238 nucleus. A possible explanation of the anomaly in charge yield of Mo and Sn fragments is presented. [Phys. Rev. C 98, 014624] Published Mon Jul 30, 2018

Keywords: Nuclear Reactions

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Born-Bogoliubov-Green-Kirkwood-Yvon hierarchy for ultracold bosonic systems (2018)

Sven Krönke and Peter Schmelcher

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-07-31

Description: Author(s): Sven Krönke and Peter Schmelcher We establish a theoretical framework for exploring the quantum dynamics of finite ultracold bosonic ensembles based on the Born-Bogoliubov-Green-Kirkwood-Yvon (BBGKY) hierarchy for equations of motion for few-particle reduced density matrices (RDMs). The theory applies to zero as well as low tempera... [Phys. Rev. A 98, 013629] Published Mon Jul 30, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Orbital order in FeSe: The case for vertex renormalization (2018)

Rui-Qi Xing, Laura Classen, and Andrey V. Chubukov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-25

Description: Author(s): Rui-Qi Xing, Laura Classen, and Andrey V. Chubukov We study the structure of the orbital order Γ = d x z † d x z − d y z † d y z in FeSe in light of recent scanning tunneling microscopy and angle-resolved photoemission spectroscopy (ARPES) data, which detect the shapes of the hole and electron pockets in the nematic phase. The geometry of the pockets indicates that... [Phys. Rev. B 98, 041108(R)] Published Tue Jul 24, 2018

Keywords: Electronic structure and strongly correlated systems

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Coexistence of metallic edge states and antiferromagnetic ordering in correlated topological insulators (2018)

A. Amaricci, A. Valli, G. Sangiovanni, B. Trauzettel, and M. Capone

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-25

Description: Author(s): A. Amaricci, A. Valli, G. Sangiovanni, B. Trauzettel, and M. Capone We investigate the emergence of antiferromagnetic ordering and its effect on the helical edge states in a quantum spin Hall insulator, in the presence of strong Coulomb interaction. Using dynamical mean-field theory, we show that the breakdown of lattice translational symmetry favors the formation o... [Phys. Rev. B 98, 045133] Published Tue Jul 24, 2018

Keywords: Electronic structure and strongly correlated systems

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Triply degenerate nodal points in $R{\mathrm{Rh}}_{6}{\mathrm{Ge}}_{4}\phantom{\rule{4pt}{0ex}}(R=\text{Y},\text{La},\text{Lu})$ (2018)

Peng-Jie Guo, Huan-Cheng Yang, Kai Liu, and Zhong-Yi Lu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-07-25

Description: Author(s): Peng-Jie Guo, Huan-Cheng Yang, Kai Liu, and Zhong-Yi Lu As a type of fermions without counterpart in high energy physics, triply degenerate fermions show exotic physical properties, which are represented by triply degenerate nodal points in topological semimetals. Here, based on the space group theory analysis, we propose a practical guidance for seeking... [Phys. Rev. B 98, 045134] Published Tue Jul 24, 2018

Keywords: Electronic structure and strongly correlated systems

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Spinon Fermi Surface in a Cluster Mott Insulator Model on a Triangular Lattice and Possible Application to $1T\text{−}{\mathrm{Ta}\mathrm{S}}_{2}$ (2018)

Wen-Yu He, Xiao Yan Xu, Gang Chen, K. T. Law, and Patrick A. Lee

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-07-25

Description: Author(s): Wen-Yu He, Xiao Yan Xu, Gang Chen, K. T. Law, and Patrick A. Lee 1 T − Ta S 2 is a cluster Mott insulator on the triangular lattice with 13 Ta atoms forming a star of David cluster as the unit cell. We derive a two-dimensional X X Z spin- 1 / 2 model with a four-spin ring exchange term to describe the effective low energy physics of a monolayer 1 T − Ta S 2 , where the effective... [Phys. Rev. Lett. 121, 046401] Published Tue Jul 24, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Development of Ferromagnetic Fluctuations in Heavily Overdoped $(\mathrm{Bi},\mathrm{Pb}{)}_{2}{\mathrm{Sr}}_{2}{\mathrm{CuO}}_{6+δ}$ Copper Oxides (2018)

Koshi Kurashima, Tadashi Adachi, Kensuke M. Suzuki, Yasushi Fukunaga, Takayuki Kawamata, Takashi Noji, Hitoshi Miyasaka, Isao Watanabe, Masanori Miyazaki, Akihiro Koda, Ryosuke Kadono, and Yoji Koike

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-08-02

Description: Author(s): Koshi Kurashima, Tadashi Adachi, Kensuke M. Suzuki, Yasushi Fukunaga, Takayuki Kawamata, Takashi Noji, Hitoshi Miyasaka, Isao Watanabe, Masanori Miyazaki, Akihiro Koda, Ryosuke Kadono, and Yoji Koike We demonstrate the presence of ferromagnetic (FM) fluctuations in the superconducting and nonsuperconducting heavily overdoped regimes of high-temperature superconducting copper oxides, using ( Bi , Pb ) 2 Sr 2 CuO 6 + δ (Bi-2201) single crystals. Magnetization curves exhibit a tendency to be saturated in high... [Phys. Rev. Lett. 121, 057002] Published Wed Aug 01, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Defect-Assisted Tunneling Electroresistance in Ferroelectric Tunnel Junctions (2018)

Konstantin Klyukin, L. L. Tao, Evgeny Y. Tsymbal, and Vitaly Alexandrov

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-08-04

Description: Author(s): Konstantin Klyukin, L. L. Tao, Evgeny Y. Tsymbal, and Vitaly Alexandrov Recent experimental results have demonstrated ferroelectricity in thin films of SrTiO 3 induced by antisite Ti Sr defects. This opens a possibility to use SrTiO 3 as a barrier layer in ferroelectric tunnel junctions (FTJs)—emerging electronic devices promising for applications in nanoelectronics. Here ... [Phys. Rev. Lett. 121, 056601] Published Fri Aug 03, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Structure of $^{13}\mathrm{Be}$ studied in proton knockout from $^{14}\mathrm{B}$ (2018)

G. Ribeiro et al. ( R 3 B Collaboration)

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-08-04

Description: Author(s): G. Ribeiro et al. ( R 3 B Collaboration) The neutron-unbound isotope Be 13 has been studied in several experiments using different reactions, different projectile energies, and different experimental setups. There is, however, no real consensus in the interpretation of the data, in particular concerning the structure of the low-lying excite... [Phys. Rev. C 98, 024603] Published Fri Aug 03, 2018

Keywords: Nuclear Reactions

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Spin-orbit-coupled soliton in a random potential (2018)

Sh. Mardonov, V. V. Konotop, B. A. Malomed, M. Modugno, and E. Ya. Sherman

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-08-07

Description: Author(s): Sh. Mardonov, V. V. Konotop, B. A. Malomed, M. Modugno, and E. Ya. Sherman We investigate theoretically the dynamics of a spin-orbit-coupled soliton formed by a self-interacting Bose-Einstein condensate immersed in a random potential, in the presence of an artificial magnetic field. We find that, due to the anomalous spin-dependent velocity, the synthetic Zeeman coupling c... [Phys. Rev. A 98, 023604] Published Mon Aug 06, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Electronic structure theory of strained two-dimensional materials with hexagonal symmetry (2018)

Shiang Fang, Stephen Carr, Miguel A. Cazalilla, and Efthimios Kaxiras

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-07

Description: Author(s): Shiang Fang, Stephen Carr, Miguel A. Cazalilla, and Efthimios Kaxiras We derive electronic tight-binding Hamiltonians for strained graphene, hexagonal boron nitride, and transition-metal dichalcogenides based on Wannier transformation of ab initio density functional theory calculations. Our microscopic models include strain effects to leading order that respect the he... [Phys. Rev. B 98, 075106] Published Mon Aug 06, 2018

Keywords: Electronic structure and strongly correlated systems

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Swift $GW$ beyond 10,000 electrons using sparse stochastic compression (2018)

Vojtěch Vlček, Wenfei Li, Roi Baer, Eran Rabani, and Daniel Neuhauser

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-07

Description: Author(s): Vojtěch Vlček, Wenfei Li, Roi Baer, Eran Rabani, and Daniel Neuhauser We introduce the concept of sparse stochastic compression, an efficient stochastic sampling of any general function. The technique uses sparse stochastic orbitals (SSOs), short vectors that sample a small number of space points. As a first demonstration, SSOs are applied in conjunction with simple d... [Phys. Rev. B 98, 075107] Published Mon Aug 06, 2018

Keywords: Electronic structure and strongly correlated systems

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Constrained density functional theory calculation with iterative optimization (2018)

Daniel Kidd, A. S. Umar, and Kálmán Varga

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-07

Description: Author(s): Daniel Kidd, A. S. Umar, and Kálmán Varga An iterative optimization approach that simultaneously minimizes the energy and optimizes the Lagrange multipliers enforcing desired constraints is presented. The method is tested on previously established benchmark systems and it is proved to be efficient and accurate. The approach can also be effi... [Phys. Rev. B 98, 075108] Published Mon Aug 06, 2018

Keywords: Electronic structure and strongly correlated systems

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Triangular antiferromagnetism on the honeycomb lattice of twisted bilayer graphene (2018)

Alex Thomson, Shubhayu Chatterjee, Subir Sachdev, and Mathias S. Scheurer

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-07

Description: Author(s): Alex Thomson, Shubhayu Chatterjee, Subir Sachdev, and Mathias S. Scheurer We present the electronic band structures of states with the same symmetry as the three-sublattice planar antiferromagnetic order of the triangular lattice. Such states can also be defined on the honeycomb lattice provided the spin density waves lie on the bonds. We identify cases which are consiste... [Phys. Rev. B 98, 075109] Published Mon Aug 06, 2018

Keywords: Electronic structure and strongly correlated systems

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Atomization of correlated molecular-hydrogen chain: A fully microscopic variational Monte Carlo solution (2018)

Andrzej Biborski, Andrzej P. Kądzielawa, and Józef Spałek

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-08

Description: Author(s): Andrzej Biborski, Andrzej P. Kądzielawa, and Józef Spałek We discuss electronic properties and their evolution for the linear chain of H 2 molecules in the presence of a uniform external force f acting along the chain. The system is described by an extended Hubbard model within a fully microscopic approach . Explicitly, the microscopic parameters describing ... [Phys. Rev. B 98, 085112] Published Tue Aug 07, 2018

Keywords: Electronic structure and strongly correlated systems

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Dynamic symmetry breaking and spin splitting in metal halide perovskites (2018)

Scott McKechnie, Jarvist M. Frost, Dimitar Pashov, Pooya Azarhoosh, Aron Walsh, and Mark van Schilfgaarde

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-07

Description: Author(s): Scott McKechnie, Jarvist M. Frost, Dimitar Pashov, Pooya Azarhoosh, Aron Walsh, and Mark van Schilfgaarde Metal halide perovskites exhibit a materials physics that is distinct from traditional semiconductors. While materials such as CH 3 NH 3 PbI 3 are nonmagnetic, the presence of heavy elements (Pb and I) in a noncentrosymmetric crystal environment result in a spin splitting of the frontier electronic bands... [Phys. Rev. B 98, 085108] Published Mon Aug 06, 2018

Keywords: Electronic structure and strongly correlated systems

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Epsilon-near-zero response and tunable perfect absorption in Weyl semimetals (2018)

Klaus Halterman, Mohammad Alidoust, and Alexander Zyuzin

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-07

Description: Author(s): Klaus Halterman, Mohammad Alidoust, and Alexander Zyuzin We theoretically study the electromagnetic response of type-I and type-II centrosymmetric Weyl metals. We derive an anisotropic permittivity tensor with off-diagonal elements to describe such gyrotropic media. Our findings reveal that for appropriate Weyl cones tilts, the real part of the transverse... [Phys. Rev. B 98, 085109] Published Mon Aug 06, 2018

Keywords: Electronic structure and strongly correlated systems

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Taylor approximation to treat nonlocality in the scattering process (2018)

N. J. Upadhyay and A. Bhagwat

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-08-08

Description: Author(s): N. J. Upadhyay and A. Bhagwat Study of the scattering process in the nonlocal interaction framework leads to an integro-differential equation. The purpose of the present work is to develop an efficient approach to solve this integro-differential equation with high degree of precision. The method developed here employs a Taylor a... [Phys. Rev. C 98, 024605] Published Tue Aug 07, 2018

Keywords: Nuclear Reactions

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Counterpropagating Fractional Hall States in Mirror-Symmetric Dirac Semimetals (2018)

Yafis Barlas

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-08-08

Description: Author(s): Yafis Barlas The Landau bands of mirror symmetric 2D Dirac semimetals (e.g., odd layers of A B A graphene) can be identified by their parity with respect to mirror symmetry. This symmetry facilitates a new class of counterpropagating Hall states. We predict the presence of a Laughlin-like correlated liquid state, ... [Phys. Rev. Lett. 121, 066602] Published Tue Aug 07, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Generation of Quantized Polaritons below the Condensation Threshold (2018)

Peter Cristofolini, Z. Hatzopoulos, Pavlos G. Savvidis, and Jeremy J. Baumberg

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-08-08

Description: Author(s): Peter Cristofolini, Z. Hatzopoulos, Pavlos G. Savvidis, and Jeremy J. Baumberg Exciton polaritons in high quality semiconductor microcavities can travel long macroscopic distances ( 〉 100 μ m ) due to their ultralight effective mass. The polaritons are repelled from optically pumped exciton reservoirs where they are formed; however, their spatial dynamics is not as expected fo... [Phys. Rev. Lett. 121, 067401] Published Tue Aug 07, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Unusual layered order and charge disproportionation in the double-perovskite compound ${\mathrm{Ca}}_{2}{\mathrm{FeMnO}}_{6}$ (2018)

Ke Yang, D. I. Khomskii, and Hua Wu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-07

Description: Author(s): Ke Yang, D. I. Khomskii, and Hua Wu While double perovskites A 2 B B ′ O 6 , if ordered, usually form a rock-salt–type structure with a checkerboard B − B ′ ordering, it is surprising that Ca 2 FeMnO 6 has alternate FeO 2 and MnO 2 layers in its perovskite structure. Here, by using density functional calculations, we demonstrate that this unusual la... [Phys. Rev. B 98, 085105] Published Mon Aug 06, 2018

Keywords: Electronic structure and strongly correlated systems

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Effects of the pion-nucleon potential in $^{197}\mathrm{Au}+^{197}\mathrm{Au}$ collisions at 1.5 GeV/nucleon (2018)

Wen-Jie Xie, Jun Su, Long Zhu, and Feng-Shou Zhang

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-06-12

Description: Author(s): Wen-Jie Xie, Jun Su, Long Zhu, and Feng-Shou Zhang The influence of the pion-nucleon potential on the pion dynamics in Au 197 + Au 197 collisions at 1.5 GeV/nucleon for different centrality intervals is investigated in the framework of the isospin-dependent quantum molecular dynamics model. It is found that the observables related to pions, such as the ... [Phys. Rev. C 97, 064608] Published Mon Jun 11, 2018

Keywords: Nuclear Reactions

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Measurement of excitation functions of evaporation residues in the $^{16}\mathrm{O}+^{124}\mathrm{Sn}$ reaction and investigation of the dependence of incomplete fusion dynamics on entrance channel parameters (2018)

D. Singh, Sneha B. Linda, Pankaj K. Giri, Amritraj Mahato, R. Tripathi, Harish Kumar, Suhail A. Tali, Siddharth Parashari, Asif Ali, Rakesh Dubey, M. Afzal Ansari, R. Kumar, S. Muralithar, and R. P. Singh

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-06-12

Description: Author(s): D. Singh, Sneha B. Linda, Pankaj K. Giri, Amritraj Mahato, R. Tripathi, Harish Kumar, Suhail A. Tali, Siddharth Parashari, Asif Ali, Rakesh Dubey, M. Afzal Ansari, R. Kumar, S. Muralithar, and R. P. Singh Excitation functions for the 11 evaporation residues populated through complete and/or incomplete fusion in O 16 + Sn 124 system at low projectile energies ≈ 3 − 7 MeV / nucleon have been measured. Recoil catcher activation technique followed by offline γ -ray spectrometry has been employed. Some of the evapor... [Phys. Rev. C 97, 064610] Published Mon Jun 11, 2018

Keywords: Nuclear Reactions

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Magnon Splitting Induced by Charge Transfer in the Three-Orbital Hubbard Model (2018)

Yao Wang, Edwin W. Huang, Brian Moritz, and Thomas P. Devereaux

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-06-12

Description: Author(s): Yao Wang, Edwin W. Huang, Brian Moritz, and Thomas P. Devereaux Understanding spin excitations and their connection to unconventional superconductivity have remained central issues since the discovery of cuprates. Direct measurement of the dynamical spin structure factor in the parent compounds can provide key information on important interactions relevant in th... [Phys. Rev. Lett. 120, 246401] Published Mon Jun 11, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Long-range Coulomb interaction effects on the topological phase transitions between semimetals and insulators (2018)

Sang; Eun Han and Eun-Gook Moon

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-05

Description: Author(s): SangEun Han and Eun-Gook Moon Topological states may be protected by a lattice symmetry in a class of topological semimetals. In three spatial dimensions, the Berry flux around gapless excitations in momentum space concretely defines a chirality, so a protecting symmetry may be referred to as a chiral symmetry. Prime examples in... [Phys. Rev. B 97, 241101(R)] Published Mon Jun 04, 2018

Keywords: Electronic structure and strongly correlated systems

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Experimental survey of the production of $α$-decaying heavy elements in $^{238}\mathrm{U}+^{232}\mathrm{Th}$ reactions at 7.5–6.1 MeV/nucleon (2018)

S. Wuenschel, K. Hagel, M. Barbui, J. Gauthier, X. G. Cao, R. Wada, E. J. Kim, Z. Majka, R. Płaneta, Z. Sosin, A. Wieloch, K. Zelga, S. Kowalski, K. Schmidt, C. Ma, G. Zhang, and J. B. Natowitz

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-06-05

Description: Author(s): S. Wuenschel, K. Hagel, M. Barbui, J. Gauthier, X. G. Cao, R. Wada, E. J. Kim, Z. Majka, R. Płaneta, Z. Sosin, A. Wieloch, K. Zelga, S. Kowalski, K. Schmidt, C. Ma, G. Zhang, and J. B. Natowitz The production of α -particle decaying heavy nuclei in reactions of 7.5–6.1 MeV/nucleon U 238 + Th 232 was explored using an in-beam detection array composed of YAP scintillators and gas ionization chamber-Si telescopes. Comparisons of α energies and half-lives for the observed products with those of th... [Phys. Rev. C 97, 064602] Published Mon Jun 04, 2018

Keywords: Nuclear Reactions

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Measurement and resonance analysis of the $^{33}\mathrm{S}(n,α)^{30}\mathrm{Si}$ cross section at the CERN n_TOF facility in the energy region from 10 to 300 keV (2018)

J. Praena et al. (n_TOF Collaboration)

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-06-05

Description: Author(s): J. Praena et al. (n_TOF Collaboration) The S 33 ( n , α ) Si 30 cross section has been measured at the neutron time-of-flight ( n _ TOF ) facility at CERN in the neutron energy range from 10 to 300 keV relative to the B 10 ( n , α ) Li 7 cross-section standard. Both reactions were measured simultaneously with a set of micromegas detectors. The flight path o... [Phys. Rev. C 97, 064603] Published Mon Jun 04, 2018

Keywords: Nuclear Reactions

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Multiple phases with intertwined magnetic and superconducting orders in Nd-doped ${\mathrm{CeCoIn}}_{5}$ (2018)

Duk Y. Kim, Shi-Zeng Lin, Franziska Weickert, P. F. S. Rosa, Eric D. Bauer, Filip Ronning, J. D. Thompson, and Roman Movshovich

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-14

Description: Author(s): Duk Y. Kim, Shi-Zeng Lin, Franziska Weickert, P. F. S. Rosa, Eric D. Bauer, Filip Ronning, J. D. Thompson, and Roman Movshovich The thermal conductivity of heavy-fermion superconductor Ce 0.95 Nd 0.05 CoIn 5 was measured with a magnetic field rotating in the tetragonal a − b plane. The thermal conductivity exhibits a step within the high-field low-temperature (HFLT) phase, which exists above 8 Tesla within the superconducting state... [Phys. Rev. B 97, 245120] Published Wed Jun 13, 2018

Keywords: Electronic structure and strongly correlated systems

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Photoinduced Hund excitons in the breakdown of a two-orbital Mott insulator (2018)

Julián Rincón, Elbio Dagotto, and Adrian E. Feiguin

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-06

Description: Author(s): Julián Rincón, Elbio Dagotto, and Adrian E. Feiguin We study the photoinduced breakdown of a two-orbital Mott insulator and resulting metallic state. Using time-dependent density matrix renormalization group, we scrutinize the real-time dynamics of the half-filled two-orbital Hubbard model interacting with a resonant radiation field pulse. The breakd... [Phys. Rev. B 97, 235104] Published Tue Jun 05, 2018

Keywords: Electronic structure and strongly correlated systems

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Turning copper metal into a Weyl semimetal (2018)

Yongping Du, Er-jun Kan, Hu Xu, Sergey Y. Savrasov, and Xiangang Wan

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-06

Description: Author(s): Yongping Du, Er-jun Kan, Hu Xu, Sergey Y. Savrasov, and Xiangang Wan A search for new topological quantum systems is challenging due to the requirement of nontrivial band connectivity that leads to protected surface states of electrons. Progress in this field was primarily due to a realization of a band inversion mechanism between even and odd parity states that was ... [Phys. Rev. B 97, 245104] Published Tue Jun 05, 2018

Keywords: Electronic structure and strongly correlated systems

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Post-Ehrenfest many-body quantum interferences in ultracold atoms far out of equilibrium (2018)

Steven Tomsovic, Peter Schlagheck, Denis Ullmo, Juan-Diego Urbina, and Klaus Richter

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-06-15

Description: Author(s): Steven Tomsovic, Peter Schlagheck, Denis Ullmo, Juan-Diego Urbina, and Klaus Richter Far out-of-equilibrium many-body quantum dynamics in isolated systems necessarily generates interferences beyond an Ehrenfest timescale, where quantum and classical expectation values diverge. Of great recent interest is the role these interferences play in the spreading of quantum information acros... [Phys. Rev. A 97, 061606(R)] Published Thu Jun 14, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Electron Phonon Coupling versus Photoelectron Energy Loss at the Origin of Replica Bands in Photoemission of FeSe on ${\mathrm{SrTiO}}_{3}$ (2018)

Fengmiao Li and George A. Sawatzky

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-06-06

Description: Author(s): Fengmiao Li and George A. Sawatzky The recent observation of replica bands in single-layer FeSe / SrTiO 3 by angle-resolved photoemission spectroscopy (ARPES) has triggered intense discussions concerning the potential influence of the FeSe electrons coupling with substrate phonons on the superconducting transition temperature. Here we p... [Phys. Rev. Lett. 120, 237001] Published Tue Jun 05, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Nonlocal pair correlations in Lieb-Liniger gases: A unified nonperturbative approach from weak degeneracy to high temperatures (2018)

Benjamin Geiger, Quirin Hummel, Juan Diego Urbina, and Klaus Richter

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-06-16

Description: Author(s): Benjamin Geiger, Quirin Hummel, Juan Diego Urbina, and Klaus Richter We present analytical results for the nonlocal pair correlations in one-dimensional bosonic systems with repulsive contact interactions that are uniformly valid from the classical regime of high temperatures down to weak quantum degeneracy entering the regime of ultralow temperatures. By using the i... [Phys. Rev. A 97, 063612] Published Fri Jun 15, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Wigner function of noninteracting trapped fermions (2018)

David S. Dean, Pierre Le Doussal, Satya N. Majumdar, and Grégory Schehr

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-06-16

Description: Author(s): David S. Dean, Pierre Le Doussal, Satya N. Majumdar, and Grégory Schehr The Wigner function is studied for trapped noninteracting fermions. Universal scaling behavior of the function, independent of the trapping potential and the spatial dimension, is found at both zero and finite temperatures. [Phys. Rev. A 97, 063614] Published Fri Jun 15, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Dimer-dimer zero crossing and dilute dimerized liquid in a one-dimensional mixture (2018)

A. Pricoupenko and D. S. Petrov

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-06-16

Description: Author(s): A. Pricoupenko and D. S. Petrov We consider the system of dimers formed in a one-dimensional mass-balanced Bose-Bose mixture of species σ = ↑ , ↓ with attractive interspecies and repulsive intraspecies contact interactions. In the plane parametrized by the ratios of the coupling constants g ↑ ↑ / | g ↑ ↓ | and g ↓ ↓ / | g ↑ ↓ | we trace out the curve... [Phys. Rev. A 97, 063616] Published Fri Jun 15, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Robust non-Abelian spin liquid and a possible intermediate phase in the antiferromagnetic Kitaev model with magnetic field (2018)

Zheng Zhu, Itamar Kimchi, D. N. Sheng, and Liang Fu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-16

Description: Author(s): Zheng Zhu, Itamar Kimchi, D. N. Sheng, and Liang Fu We investigate the non-Abelian topological chiral spin-liquid phase in the two-dimensional Kitaev honeycomb model subject to a magnetic field. By combining density matrix renormalization group and exact diagonalization we study the energy spectra, entanglement, topological degeneracy, and expectatio... [Phys. Rev. B 97, 241110(R)] Published Fri Jun 15, 2018

Keywords: Electronic structure and strongly correlated systems

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Quantum entanglement of the Sachdev-Ye-Kitaev models (2018)

Chunxiao Liu, Xiao Chen, and Leon Balents

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-16

Description: Author(s): Chunxiao Liu, Xiao Chen, and Leon Balents The Sachdev-Ye-Kitaev (SYK) model is a quantum-mechanical model of fermions interacting with q -body random couplings. For q = 2 , it describes free particles and is nonchaotic in the many-body sense, while for q 〉 2 it is strongly interacting and exhibits many-body chaos. In this work we study the ent... [Phys. Rev. B 97, 245126] Published Fri Jun 15, 2018

Keywords: Electronic structure and strongly correlated systems

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${Z}_{N}$ Berry Phases in Symmetry Protected Topological Phases (2018)

Toshikaze Kariyado, Takahiro Morimoto, and Yasuhiro Hatsugai

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-06-16

Description: Author(s): Toshikaze Kariyado, Takahiro Morimoto, and Yasuhiro Hatsugai We show that the Z N Berry phase (Berry phase quantized into 2 π / N ) provides a useful tool to characterize symmetry protected topological phases with correlation that can be directly computed through numerics of a relatively small system size. The Z N Berry phase is defined in a N − 1 -dimensional paramet... [Phys. Rev. Lett. 120, 247202] Published Fri Jun 15, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Dynamical density matrix renormalization group study of spin and charge excitations in the four-leg $t\text{−}{t}^{′}\text{−}J$ ladder (2018)

Takami Tohyama, Michiyasu Mori, and Shigetoshi Sota

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-22

Description: Author(s): Takami Tohyama, Michiyasu Mori, and Shigetoshi Sota The ground state of the t − t ′ − J ladder with four legs favors a striped charge distribution for the parameters corresponding to hole-doped cuprate superconductors. We investigate the dynamical spin and charge structure factors of the model by using the dynamical density matrix renormalization group (D... [Phys. Rev. B 97, 235137] Published Thu Jun 21, 2018

Keywords: Electronic structure and strongly correlated systems

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Efficient Bethe-Salpeter equation treatment in dynamical mean-field theory (2018)

Agnese Tagliavini, Stefan Hummel, Nils Wentzell, Sabine Andergassen, Alessandro Toschi, and Georg Rohringer

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-23

Description: Author(s): Agnese Tagliavini, Stefan Hummel, Nils Wentzell, Sabine Andergassen, Alessandro Toschi, and Georg Rohringer We present here two alternative schemes designed to correct the high-frequency truncation errors in the numerical treatment of the Bethe-Salpeter equations. The schemes are applicable to all Bethe-Salpeter calculations with a local two-particle irreducible vertex, which is relevant, e.g., for the dy... [Phys. Rev. B 97, 235140] Published Fri Jun 22, 2018

Keywords: Electronic structure and strongly correlated systems

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Dynamical localization in ${ℤ}_{2}$ lattice gauge theories (2018)

Adam Smith, Johannes Knolle, Roderich Moessner, and Dmitry L. Kovrizhin

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-23

Description: Author(s): Adam Smith, Johannes Knolle, Roderich Moessner, and Dmitry L. Kovrizhin We study quantum quenches in two-dimensional lattice gauge theories with fermions coupled to dynamical Z 2 gauge fields. Through the identification of an extensive set of conserved quantities, we propose a generic mechanism of charge localization in the absence of quenched disorder both in the Hamilt... [Phys. Rev. B 97, 245137] Published Fri Jun 22, 2018

Keywords: Electronic structure and strongly correlated systems

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Experimental study of the spectroscopic factors of $^{90–97}\mathrm{Zr}$ (2018)

L. Gan, H. B. Sun, Z. H. Li, Y. J. Li, J. Su, B. Guo, S. Q. Yan, Y. B. Wang, S. Zeng, Z. Y. Han, X. Y. Li, D. H. Li, T. L. Ma, Y. P. Shen, Y. Su, E. T. Li, S. P. Hu, and W. P. Liu

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-06-23

Description: Author(s): L. Gan, H. B. Sun, Z. H. Li, Y. J. Li, J. Su, B. Guo, S. Q. Yan, Y. B. Wang, S. Zeng, Z. Y. Han, X. Y. Li, D. H. Li, T. L. Ma, Y. P. Shen, Y. Su, E. T. Li, S. P. Hu, and W. P. Liu Several zirconium isotopes are in the path of slow neutron capture (s) process, and the direct components of ( n , γ ) reactions can be derived from their neutron spectroscopic factors. In the present work, the angular distributions of ( C 12 , C 13 ) and ( C 13 , C 12 ) reactions on targets Zr 90 , 92 , 94 , 96 were obta... [Phys. Rev. C 97, 064614] Published Fri Jun 22, 2018

Keywords: Nuclear Reactions

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Electronic structure of FeO, $γ−{\mathrm{Fe}}_{2}{\mathrm{O}}_{3}$, and ${\mathrm{Fe}}_{3}{\mathrm{O}}_{4}$ epitaxial films using high-energy spectroscopies (2018)

Juan Rubio-Zuazo, Ashish Chainani, Munetaka Taguchi, Daniel Malterre, Aida Serrano, and German R. Castro

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-28

Description: Author(s): Juan Rubio-Zuazo, Ashish Chainani, Munetaka Taguchi, Daniel Malterre, Aida Serrano, and German R. Castro We study the electronic structure of well-characterized epitaxial films of FeO (wustite), γ − Fe 2 O 3 (maghemite), and Fe 3 O 4 (magnetite) using hard x-ray photoelectron spectroscopy (HAXPES), x-ray absorption near-edge spectroscopy (XANES), and electron energy loss spectroscopy (EELS). We carry out HAXPE... [Phys. Rev. B 97, 235148] Published Wed Jun 27, 2018

Keywords: Electronic structure and strongly correlated systems

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Topology of Disconnected Elementary Band Representations (2018)

Jennifer Cano, Barry Bradlyn, Zhijun Wang, L. Elcoro, M. G. Vergniory, C. Felser, M. I. Aroyo, and B. Andrei Bernevig

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-06-28

Description: Author(s): Jennifer Cano, Barry Bradlyn, Zhijun Wang, L. Elcoro, M. G. Vergniory, C. Felser, M. I. Aroyo, and B. Andrei Bernevig A new topological invariant—a movable but unremovable Dirac cone—is identified by considering symmorphic and non-symmorphic space groups of gapped elementary band representations. [Phys. Rev. Lett. 120, 266401] Published Wed Jun 27, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Temperature versus Sm concentration phase diagram and quantum criticality in the correlated electron system ${\mathrm{Ce}}_{1−x}{\mathrm{Sm}}_{x}{\mathrm{CoIn}}_{5}$ (2018)

N. Pouse, S. Jang, B. D. White, S. Ran, R. B. Adhikari, C. C. Almasan, and M. B. Maple

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-29

Description: Author(s): N. Pouse, S. Jang, B. D. White, S. Ran, R. B. Adhikari, C. C. Almasan, and M. B. Maple We report electrical resistivity, magnetization, and specific heat measurements on the correlated electron system Ce 1 − x Sm x CoIn 5 ( 0 ≤ x ≤ 1 ). Superconductivity (SC) in the heavy-fermion compound CeCoIn 5 , which is suppressed with increasing Sm concentration x , and antiferromagnetic (AFM) order of SmCoIn 5 ,... [Phys. Rev. B 97, 235149] Published Thu Jun 28, 2018

Keywords: Electronic structure and strongly correlated systems

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Phase diagram of the Hubbard-Kondo lattice model from the variational cluster approximation (2018)

J. P. L. Faye, M. N. Kiselev, P. Ram, B. Kumar, and D. Sénéchal

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-29

Description: Author(s): J. P. L. Faye, M. N. Kiselev, P. Ram, B. Kumar, and D. Sénéchal The interplay between the Kondo effect and magnetic ordering driven by the Ruderman-Kittel-Kasuya-Yosida interaction is studied within the two-dimensional Hubbard-Kondo lattice model. In addition to the antiferromagnetic exchange interaction J ⊥ between the localized spins and the conduction electron... [Phys. Rev. B 97, 235151] Published Thu Jun 28, 2018

Keywords: Electronic structure and strongly correlated systems

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Quantum Hall Effect with Composites of Magnetic Flux Tubes and Charged Particles (2018)

Marija Todorić, Dario Jukić, Danko Radić, Marin Soljačić, and Hrvoje Buljan

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-06-29

Description: Author(s): Marija Todorić, Dario Jukić, Danko Radić, Marin Soljačić, and Hrvoje Buljan Composites formed from charged particles and magnetic flux tubes, proposed by Wilczek, are one model for anyons—particles obeying fractional statistics. Here we propose a scheme for realizing charged flux tubes, in which a charged object with an intrinsic magnetic dipole moment is placed between two... [Phys. Rev. Lett. 120, 267201] Published Thu Jun 28, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Dimensional crossover for the beyond-mean-field correction in Bose gases (2018)

Tobias Ilg, Jan Kumlin, Luis Santos, Dmitry S. Petrov, and Hans Peter Büchler

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-11-27

Description: Author(s): Tobias Ilg, Jan Kumlin, Luis Santos, Dmitry S. Petrov, and Hans Peter Büchler We present a detailed beyond-mean-field analysis of a weakly interacting Bose gas in the crossover from three to low dimensions. We find an analytical solution for the energy and provide a clear qualitative picture of the crossover in the case of a box potential with periodic boundary conditions. We... [Phys. Rev. A 98, 051604(R)] Published Mon Nov 26, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Order parameter and detection for a finite ensemble of crystallized one-dimensional dipolar bosons in optical lattices (2018)

Budhaditya Chatterjee and Axel U. J. Lode

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-11-27

Description: Author(s): Budhaditya Chatterjee and Axel U. J. Lode We explore the ground-state properties of a few bosons with dipole-dipole interactions in a one-dimensional optical lattice. For comparatively strong interactions, a transition from a Mott-insulator state to a crystal state occurs. Herein, we provide a detailed characterization and a detection proto... [Phys. Rev. A 98, 053624] Published Mon Nov 26, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Probing the Combined Electromagnetic Local Density of Optical States with Quantum Emitters Supporting Strong Electric and Magnetic Transitions (2018)

Dongfang Li, Sinan Karaveli, Sébastien Cueff, Wenhao Li, and Rashid Zia

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-11-29

Description: Author(s): Dongfang Li, Sinan Karaveli, Sébastien Cueff, Wenhao Li, and Rashid Zia We experimentally demonstrate that the radiative decay rate of a quantum emitter is determined by the combined electric and magnetic local density of optical states (LDOS). A Drexhage-style experiment was performed for two distinct quantum emitters, divalent nickel ions in magnesium oxide and trival... [Phys. Rev. Lett. 121, 227403] Published Wed Nov 28, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Chiral Majorana edge states in the vortex core of a $p+ip$ Fermi superfluid (2018)

Jing-Bo Wang, Wei Yi, and Jian-Song Pan

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-11-28

Description: Author(s): Jing-Bo Wang, Wei Yi, and Jian-Song Pan We study Majorana modes in the vortex core of a two-dimensional p + i p Fermi superfluid interacting with a Bose-Einstein condensate. Under a repulsive s -wave contact interaction between fermions and bosons, fermions are depleted from the vortex core when the bosonic density becomes sufficiently high. ... [Phys. Rev. A 98, 053630] Published Tue Nov 27, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Disordered fermionic quantum critical points (2018)

Hennadii Yerzhakov and Joseph Maciejko

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-01

Description: Author(s): Hennadii Yerzhakov and Joseph Maciejko We study the effect of quenched disorder on the semimetal-superconductor quantum phase transition in a model of two-dimensional Dirac semimetal with N flavors of two-component Dirac fermions, using perturbative renormalization group methods at one-loop order in a double epsilon expansion. For N ≥ 2 we... [Phys. Rev. B 98, 195142] Published Fri Nov 30, 2018

Keywords: Electronic structure and strongly correlated systems

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Origin of the current-driven breakdown in vanadium oxides: Thermal versus electronic (2018)

I. Valmianski, P. Y. Wang, S. Wang, Juan Gabriel Ramirez, S. Guénon, and Ivan K. Schuller

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-01

Description: Author(s): I. Valmianski, P. Y. Wang, S. Wang, Juan Gabriel Ramirez, S. Guénon, and Ivan K. Schuller We report the existence of two competing mechanisms in the current-driven electrical breakdown of vanadium sesquioxide ( V 2 O 3 ) and vanadium dioxide ( V O 2 ) nanodevices. Our experiments and simulations show that the competition between a purely electronic (PE) mechanism and an electrothermal (ET) mechan... [Phys. Rev. B 98, 195144] Published Fri Nov 30, 2018

Keywords: Electronic structure and strongly correlated systems

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Valence transition model of the pseudogap, charge order, and superconductivity in electron-doped and hole-doped copper oxides (2018)

Sumit Mazumdar

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-01

Description: Author(s): Sumit Mazumdar We present a valence transition model for electron- and hole-doped cuprates, within which there occurs a discrete jump in ionicity Cu 2 + → Cu 1 + in both families upon doping, at or near optimal doping in the conventionally prepared electron-doped compounds and at the pseudogap phase transition in the ho... [Phys. Rev. B 98, 205153] Published Fri Nov 30, 2018

Keywords: Electronic structure and strongly correlated systems

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Measurement of the $^{80}\mathrm{Se}(γ,n)$ reaction with linearly polarized $γ$ rays (2018)

S. A. Yates, B. Fallin, C. R. Howell, Krishichayan, W. Tornow, and S. M. Grimes

American Physical Society (APS)

In: Physical Review C

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Publication Date: 2018-12-01

Description: Author(s): S. A. Yates, B. Fallin, C. R. Howell, Krishichayan, W. Tornow, and S. M. Grimes This paper reports the results of the first measurements of the differential cross section of the Se 80 ( γ , n ) Se 79 reaction with a linearly polarized gamma-ray ( γ -ray) beam. The cross section was measured at three incident γ -ray beam energies: 15.6, 15.8, and 16.0 MeV, with a beam energy spread of 3.0%... [Phys. Rev. C 98, 054621] Published Fri Nov 30, 2018

Keywords: Nuclear Reactions

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Plasmon-Assisted Resonant Electron Tunneling in a Scanning Tunneling Microscope Junction (2018)

Shuyi Liu, Martin Wolf, and Takashi Kumagai

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-12-01

Description: Author(s): Shuyi Liu, Martin Wolf, and Takashi Kumagai We report plasmon-assisted resonant electron tunneling from a Ag or Au tip to field emission resonances (FERs) of a Ag(111) surface induced by cw laser excitation of a scanning tunneling microscope (STM) junction at visible wavelengths. As a hallmark of the plasmon-assisted resonant tunneling, we ob... [Phys. Rev. Lett. 121, 226802] Published Fri Nov 30, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Dirac nodal lines and flat-band surface state in the functional oxide ${\mathrm{RuO}}_{2}$ (2018)

Vedran Jovic, Roland J. Koch, Swarup K. Panda, Helmuth Berger, Philippe Bugnon, Arnaud Magrez, Kevin E. Smith, Silke Biermann, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, and Simon Moser

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-04

Description: Author(s): Vedran Jovic, Roland J. Koch, Swarup K. Panda, Helmuth Berger, Philippe Bugnon, Arnaud Magrez, Kevin E. Smith, Silke Biermann, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, and Simon Moser The efficiency and stability of RuO 2 in electrocatalysis has made this material a subject of intense fundamental and industrial interest. The surface functionality is rooted in its electronic and magnetic properties, determined by a complex interplay of lattice-, spin-rotational, and time-reversal s... [Phys. Rev. B 98, 241101(R)] Published Mon Dec 03, 2018

Keywords: Electronic structure and strongly correlated systems

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Exact results for a ${\mathbb{Z}}_{3}$-clock-type model and some close relatives (2018)

Iman Mahyaeh and Eddy Ardonne

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-04

Description: Author(s): Iman Mahyaeh and Eddy Ardonne In this paper, we generalized the Peschel-Emery line of the interacting transverse field Ising model to a model based on three-state clock variables. Along this line, the model has exactly degenerate ground states, which can be written as product states. In addition, we present operators that transf... [Phys. Rev. B 98, 245104] Published Mon Dec 03, 2018

Keywords: Electronic structure and strongly correlated systems

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Coherent and incoherent bands in La and Rh doped ${\mathrm{Sr}}_{3}{\mathrm{Ir}}_{2}{\mathrm{O}}_{7}$ (2018)

V. Brouet, L. Serrier-Garcia, A. Louat, L. Fruchter, F. Bertran, P. Le Fèvre, J. Rault, A. Forget, and D. Colson

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-04

Description: Author(s): V. Brouet, L. Serrier-Garcia, A. Louat, L. Fruchter, F. Bertran, P. Le Fèvre, J. Rault, A. Forget, and D. Colson In Sr 2 IrO 4 and Sr 3 Ir 2 O 7 , correlations, magnetism, and spin-orbit coupling compete on similar energy scales, creating a new context to study metal-insulator transitions (MIT). We use here angle-resolved photoemission to investigate the MIT as a function of hole and electron doping in Sr 3 Ir 2 O 7 , obtain... [Phys. Rev. B 98, 235101] Published Mon Dec 03, 2018

Keywords: Electronic structure and strongly correlated systems

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Pseudo-Goldstone Gaps and Order-by-Quantum Disorder in Frustrated Magnets (2018)

Jeffrey G. Rau, Paul A. McClarty, and Roderich Moessner

American Physical Society (APS)

In: Physical Review Letters

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Publication Date: 2018-12-04

Description: Author(s): Jeffrey G. Rau, Paul A. McClarty, and Roderich Moessner In systems with competing interactions, continuous degeneracies can appear which are accidental, in that they are not related to any symmetry of the Hamiltonian. Accordingly, the pseudo-Goldstone modes associated with these degeneracies are also unprotected. Indeed, through a process known as “order... [Phys. Rev. Lett. 121, 237201] Published Mon Dec 03, 2018

Keywords: Condensed Matter: Electronic Properties, etc.

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Self-energy dispersion in the Hubbard model (2018)

Thomas Mertz, Karim Zantout, and Roser Valentí

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-04

Description: Author(s): Thomas Mertz, Karim Zantout, and Roser Valentí We introduce the concept of self-energy dispersion as an error bound on local theories and apply it to the two-dimensional Hubbard model on the square lattice at half filling. Since the self-energy has no single-particle analog and is not directly measurable in experiments, its general behavior as a... [Phys. Rev. B 98, 235105] Published Mon Dec 03, 2018

Keywords: Electronic structure and strongly correlated systems

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Analytical investigation of singularities in two-particle irreducible vertex functions of the Hubbard atom (2018)

P. Thunström, O. Gunnarsson, Sergio Ciuchi, and G. Rohringer

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-04

Description: Author(s): P. Thunström, O. Gunnarsson, Sergio Ciuchi, and G. Rohringer The local two-particle Green’s function and its generalized susceptibility are central building blocks in state-of-the-art theoretical descriptions of strongly correlated many-electron systems. The unexpected discovery of singular points in the generalized susceptibility, resulting in divergences of the two-particle irreducible vertex function and in multivaluedness of the Luttinger-Ward functional, has therefore attracted considerable interest. Unfortunately, almost no analytical results for irreducible vertices are available for correlated electrons. Here, the authors fill this gap by presenting fully analytical expressions for all irreducible vertex function of a simple, yet prototypical, correlated model, the single-orbital Hubbard atom. This gives highly relevant insights into the energy dependence of these functions. [Phys. Rev. B 98, 235107] Published Mon Dec 03, 2018

Keywords: Electronic structure and strongly correlated systems

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Inversion-symmetry protected chiral hinge states in stacks of doped quantum Hall layers (2018)

Sander H. Kooi, Guido van Miert, and Carmine Ortix

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-04

Description: Author(s): Sander H. Kooi, Guido van Miert, and Carmine Ortix We prove the existence of higher-order topological insulators with protected chiral hinge modes in quasi-two-dimensional systems made out of coupled layers stacked in an inversion-symmetric manner. In particular, we show that a homogeneous external magnetic field slightly tilted away from the stacki... [Phys. Rev. B 98, 245102] Published Mon Dec 03, 2018

Keywords: Electronic structure and strongly correlated systems

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Correlations and electronic order in a two-orbital honeycomb lattice model for twisted bilayer graphene (2018)

Jörn W. F. Venderbos and Rafael M. Fernandes

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-04

Description: Author(s): Jörn W. F. Venderbos and Rafael M. Fernandes The recent observation of superconductivity in proximity to an insulating phase in twisted bilayer graphene (TBG) at small “magic” twist angles has been linked to the existence of nearly flat bands, which make TBG a fresh playground to investigate the interplay between correlations and superconducti... [Phys. Rev. B 98, 245103] Published Mon Dec 03, 2018

Keywords: Electronic structure and strongly correlated systems

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Analytic continuation via domain knowledge free machine learning (2018)

Hongkee Yoon, Jae-Hoon Sim, and Myung Joon Han

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-04

Description: Author(s): Hongkee Yoon, Jae-Hoon Sim, and Myung Joon Han We present a machine-learning approach to a long-standing issue in quantum many-body physics, namely, analytic continuation. This notorious ill-conditioned problem of obtaining spectral function from an imaginary time Green's function has been a focus of new method developments for past decades. Her... [Phys. Rev. B 98, 245101] Published Mon Dec 03, 2018

Keywords: Electronic structure and strongly correlated systems

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Generating macroscopic superpositions with interacting Bose-Einstein condensates: Multimode speedups and speed limits (2018)

Samuel P. Nolan and Simon A. Haine

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-12-05

Description: Author(s): Samuel P. Nolan and Simon A. Haine We theoretically investigate the effect of multimode dynamics on the creation of macroscopic superposition states (spin-cat states) in Bose-Einstein condensates via one-axis twisting. A two-component Bose-Einstein condensate naturally realizes an effective one-axis twisting interaction, under which ... [Phys. Rev. A 98, 063606] Published Tue Dec 04, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Quantum reflection of rare-gas atoms and clusters from a grating (2018)

G. Rojas-Lorenzo, J. Rubayo-Soneira, S. Miret-Artés, and E. Pollak

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-12-05

Description: Author(s): G. Rojas-Lorenzo, J. Rubayo-Soneira, S. Miret-Artés, and E. Pollak Quantum reflection is a universal property of atoms and molecules when scattered from surfaces in ultracold collisions. Recent experimental work has documented the quantum reflection and diffraction of He atoms, dimers, trimers, and neon atoms when reflected from a grating. Conditions for the observ... [Phys. Rev. A 98, 063604] Published Tue Dec 04, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Gauge-potential-induced rotation of spin-orbit-coupled Bose-Einstein condensates (2018)

Jingjing Jin, Wei Han, and Suying Zhang

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-12-05

Description: Author(s): Jingjing Jin, Wei Han, and Suying Zhang We demonstrate that a spin-orbit-coupled Bose-Einstein condensate can be effectively rotated by adding a real magnetic field to inputting gauge angular momentum, which is distinctly different from the traditional ways of rotation by stirring or Raman laser dressing to inputting canonical angular mom... [Phys. Rev. A 98, 063607] Published Tue Dec 04, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Topological crystalline insulator states in the ${\mathrm{Ca}}_{2}\mathrm{As}$ family (2018)

Xiaoting Zhou, Chuang-Han Hsu, Tay-Rong Chang, Hung-Ju Tien, Qiong Ma, Pablo Jarillo-Herrero, Nuh Gedik, Arun Bansil, Vitor M. Pereira, Su-Yang Xu, Hsin Lin, and Liang Fu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-05

Description: Author(s): Xiaoting Zhou, Chuang-Han Hsu, Tay-Rong Chang, Hung-Ju Tien, Qiong Ma, Pablo Jarillo-Herrero, Nuh Gedik, Arun Bansil, Vitor M. Pereira, Su-Yang Xu, Hsin Lin, and Liang Fu Topological crystalline insulators (TCIs) are insulating electronic phases of matter with nontrivial topology originating from crystalline symmetries. Recent theoretical advances have proposed new TCI states protected by rotational symmetries and provided powerful guidelines to search for TCIs in re... [Phys. Rev. B 98, 241104(R)] Published Tue Dec 04, 2018

Keywords: Electronic structure and strongly correlated systems

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Visualizing topological edge states of single and double bilayer Bi supported on multibilayer Bi(111) films (2018)

Lang Peng, Jing-Jing Xian, Peizhe Tang, Angel Rubio, Shou-Cheng Zhang, Wenhao Zhang, and Ying-Shuang Fu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-06

Description: Author(s): Lang Peng, Jing-Jing Xian, Peizhe Tang, Angel Rubio, Shou-Cheng Zhang, Wenhao Zhang, and Ying-Shuang Fu Freestanding single bilayer Bi(111) is a two-dimensional topological insulator with edge states propagating along its perimeter. Given the interlayer coupling experimentally, the topological nature of Bi(111) thin films and the impact of the supporting substrate on the topmost Bi bilayer are still u... [Phys. Rev. B 98, 245108] Published Wed Dec 05, 2018

Keywords: Electronic structure and strongly correlated systems

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Anomalous behavior of the electronic structure of (${\mathrm{Bi}}_{1−x}{\mathrm{In}}_{x}{)}_{2}{\mathrm{Se}}_{3}$ across the quantum phase transition from topological to trivial insulator (2018)

J. Sánchez-Barriga, I. Aguilera, L. V. Yashina, D. Y. Tsukanova, F. Freyse, A. N. Chaika, C. Callaert, A. M. Abakumov, J. Hadermann, A. Varykhalov, E. D. L. Rienks, G. Bihlmayer, S. Blügel, and O. Rader

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-06

Description: Author(s): J. Sánchez-Barriga, I. Aguilera, L. V. Yashina, D. Y. Tsukanova, F. Freyse, A. N. Chaika, C. Callaert, A. M. Abakumov, J. Hadermann, A. Varykhalov, E. D. L. Rienks, G. Bihlmayer, S. Blügel, and O. Rader The authors investigate the electronic and spin structure of topological surface states across a topological quantum phase transition. They find a surface band gap opening at the Dirac point of the topological surface states, giving rise to massive fermions with nonzero spin polarization on both sides of the phase transition. A mechanism of bulk-mediated scattering processes that increase with decreasing spin-orbit coupling strength is proposed as an explanation for the problem of the unconventional transformation between spin Dirac phases. [Phys. Rev. B 98, 235110] Published Wed Dec 05, 2018

Keywords: Electronic structure and strongly correlated systems

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Weyl disks: Theoretical prediction (2018)

Janis Erdmanis, Árpád Lukács, and Yuli V. Nazarov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-06

Description: Author(s): Janis Erdmanis, Árpád Lukács, and Yuli V. Nazarov A variety of quantum systems exhibit Weyl points in their spectra where two bands cross in a point of three-dimensional parameter space with conical dispersion in the vicinity of the point. We consider theoretically the soft constraint regime where the parameters are dynamical quantum variables. We ... [Phys. Rev. B 98, 241105(R)] Published Wed Dec 05, 2018

Keywords: Electronic structure and strongly correlated systems

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Quantum behavior of hydrogen-vacancy complexes in diamond (2018)

Kamil Czelej, Marcin Roland Zemła, Piotr Śpiewak, and Krzysztof J. Kurzydłowski

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-07

Description: Author(s): Kamil Czelej, Marcin Roland Zemła, Piotr Śpiewak, and Krzysztof J. Kurzydłowski Hydrogen plays an essential role in the growth process of artificial diamond and can easily form complexes with lattice vacancies. Despite substantial efforts to resolve the electronic structure and the ground-state properties of the hydrogen-vacancy (HV) center, the final remarks are ambiguous, whi... [Phys. Rev. B 98, 235111] Published Thu Dec 06, 2018

Keywords: Electronic structure and strongly correlated systems

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Topological edge states in Rashba-Dresselhaus spin-orbit-coupled atoms in a Zeeman lattice (2018)

C. Li, F. Ye, X. Chen, Y. V. Kartashov, L. Torner, and V. V. Konotop

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-12-08

Description: Author(s): C. Li, F. Ye, X. Chen, Y. V. Kartashov, L. Torner, and V. V. Konotop We address the impact of spin-orbit coupling on the existence and properties of topological edge states of cold neutral atoms and Bose-Einstein condensates loaded in honeycomb Zeeman lattices—lattices where the spinor components are placed in potentials having opposite signs. We find that the type o... [Phys. Rev. A 98, 061601(R)] Published Fri Dec 07, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

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Generation of multiple plasmons in strontium niobates mediated by local field effects (2018)

Tao Zhu, Paolo E. Trevisanutto, Teguh Citra Asmara, Lei Xu, Yuan Ping Feng, and Andrivo Rusydi

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-12-08

Description: Author(s): Tao Zhu, Paolo E. Trevisanutto, Teguh Citra Asmara, Lei Xu, Yuan Ping Feng, and Andrivo Rusydi Recently, an anomalous generation of multiple plasmons with large spectral weight transfer in the visible to ultraviolet range (energies below the band gap) has been experimentally observed in the insulatinglike phase of oxygen-rich strontium niobium oxides ( SrNbO 3 + δ ). Here, we investigate the groun... [Phys. Rev. B 98, 235115] Published Fri Dec 07, 2018

Keywords: Electronic structure and strongly correlated systems

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