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Dynamical quantum phase transitions in the Kitaev honeycomb model (2015)

Markus Schmitt and Stefan Kehrein

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Markus Schmitt and Stefan Kehrein The notion of a dynamical quantum phase transition (DQPT) was recently introduced [Heyl et al. , Phys. Rev. Lett. 110 , 135704 (2013) ] as the nonanalytic behavior of the Loschmidt echo at critical times in the thermodynamic limit. In this work the quench dynamics in the ground state sector of the two… [Phys. Rev. B 92, 075114] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Creating and manipulating non-Abelian anyons in cold atom systems using auxiliary bosons (2015)

Yuhe Zhang, G. J. Sreejith, and J. K. Jain

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Yuhe Zhang, G. J. Sreejith, and J. K. Jain The possibility of realizing bosonic fractional quantum Hall effect in ultracold atomic systems suggests a new route to producing and manipulating anyons, by introducing auxiliary bosons of a different species that capture quasiholes and thus inherit their nontrivial braiding properties. States with… [Phys. Rev. B 92, 075116] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Origin of strong dispersion in Hubbard insulators (2015)

Y. Wang, K. Wohlfeld, B. Moritz, C. J. Jia, M. van Veenendaal, K. Wu, C.-C. Chen, and T. P. Devereaux

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Y. Wang, K. Wohlfeld, B. Moritz, C. J. Jia, M. van Veenendaal, K. Wu, C.-C. Chen, and T. P. Devereaux Using cluster perturbation theory, we explain the origin of the strongly dispersive feature found at high binding energy in the spectral function of the Hubbard model. By comparing the Hubbard and t − J − 3 s model spectra, we show that this dispersion does not originate from either coupling to spin fluc… [Phys. Rev. B 92, 075119] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Logarithmic temperature dependence of samarium ion valence in the heavy-fermion Sm_{x} La_{1−x} Os_{4} Sb_{12} (2015)

Kengo Fushiya, Ryoichi Miyazaki, Ryuji Higashinaka, Akira Yamada, Masaichiro Mizumaki, Satoshi Tsutsui, Kiyofumi Nitta, Tomoya Uruga, Bunya Suemitsu, Hideyuki Sato, and Yuji Aoki

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Kengo Fushiya, Ryoichi Miyazaki, Ryuji Higashinaka, Akira Yamada, Masaichiro Mizumaki, Satoshi Tsutsui, Kiyofumi Nitta, Tomoya Uruga, Bunya Suemitsu, Hideyuki Sato, and Yuji Aoki We have measured x-ray absorption spectra at the Sm L 3 edge to investigate the Sm-ion valence of ( S m x L a 1 − x ) O s 4 S b 12 , in which field-insensitive heavy-fermion behavior appears at low temperatures for x = 1 . It has been found that the Sm-ion valance shifts to 2 + with La ion substitution; from v = + 2.78 ( x = 1 ) … [Phys. Rev. B 92, 075118] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Lifshitz transition and Van Hove singularity in a three-dimensional topological Dirac semimetal (2015)

Su-Yang Xu, Chang Liu, I. Belopolski, S. K. Kushwaha, R. Sankar, J. W. Krizan, T.-R. Chang, C. M. Polley, J. Adell, T. Balasubramanian, K. Miyamoto, N. Alidoust, Guang Bian, M. Neupane, H.-T. Jeng, C.-Y. Huang, W.-F. Tsai, T. Okuda, A. Bansil, F. C. Chou, R. J. Cava, H. Lin, and M. Z. Hasan

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Su-Yang Xu, Chang Liu, I. Belopolski, S. K. Kushwaha, R. Sankar, J. W. Krizan, T.-R. Chang, C. M. Polley, J. Adell, T. Balasubramanian, K. Miyamoto, N. Alidoust, Guang Bian, M. Neupane, H.-T. Jeng, C.-Y. Huang, W.-F. Tsai, T. Okuda, A. Bansil, F. C. Chou, R. J. Cava, H. Lin, and M. Z. Hasan A three-dimensional (3D) Dirac semimetal is a novel state of quantum matter which has recently attracted much attention as an apparent 3D version of graphene. In this paper, we report results on the electronic structure of the 3D Dirac semimetal Na 3 Bi at a surface that reveals its nontrivial ground … [Phys. Rev. B 92, 075115] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Fermi-liquid theory for the single-impurity Anderson model (2015)

Christophe Mora, Cătălin Paşcu Moca, Jan von Delft, and Gergely Zaránd

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Christophe Mora, Cătălin Paşcu Moca, Jan von Delft, and Gergely Zaránd We generalize Nozières' Fermi-liquid theory for the low-energy behavior of the Kondo model to that of the single-impurity Anderson model. In addition to the electrons' phase shift at the Fermi energy, the low-energy Fermi-liquid theory is characterized by four Fermi-liquid parameters: the two given … [Phys. Rev. B 92, 075120] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Resolving CuO chain and CuO_{2} plane contributions to the YBa_{2} Cu_{3} O_{7−δ} valence band by standing-wave excited hard x-ray photoelectron spectroscopy (2015)

S. Thiess, T.-L. Lee, C. Aruta, C. T. Lin, F. Venturini, N. B. Brookes, B. C. C. Cowie, and J. Zegenhagen

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): S. Thiess, T.-L. Lee, C. Aruta, C. T. Lin, F. Venturini, N. B. Brookes, B. C. C. Cowie, and J. Zegenhagen We analyzed the valence band (VB) of the 90 K high-temperature superconductor YBa 2 Cu 3 O 7 − δ by photoelectron spectroscopy under standing-wave excitation employing hard x rays. Precisely positioning the standing-wave intensity in the unit cell allows selectively probing the VB yield from the CuO chains… [Phys. Rev. B 92, 075117] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Resonant inelastic x-ray scattering on single magnons at oxygen K edges (2015)

Beom Hyun Kim and Jeroen van den Brink

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Beom Hyun Kim and Jeroen van den Brink The recent discovery that resonant inelastic x-ray scattering can probe single-magnon (SM) dispersions in transition metal (TM) oxides when the x-ray energy is tuned to the TM L edge has put this technique on a par with inelastic neutron scattering. It is generally presumed that selection rules forb… [Phys. Rev. B 92, 081105(R)] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Ultralong-range order in the Fermi-Hubbard model with long-range interactions (2015)

Erik G. C. P. van Loon, Mikhail I. Katsnelson, and Mikhail Lemeshko

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Erik G. C. P. van Loon, Mikhail I. Katsnelson, and Mikhail Lemeshko We use the dual boson approach to reveal the phase diagram of the Fermi-Hubbard model with long-range dipole-dipole interactions. By using a large-scale finite-temperature calculation on a 64 × 64 square lattice we demonstrate the existence of a novel phase, possessing an “ultralong-range” order. The … [Phys. Rev. B 92, 081106(R)] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Quantized topological magnetoelectric effect of the zero-plateau quantum anomalous Hall state (2015)

Jing Wang, Biao Lian, Xiao-Liang Qi, and Shou-Cheng Zhang

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Jing Wang, Biao Lian, Xiao-Liang Qi, and Shou-Cheng Zhang Motivated by the possibility of experimental detection of the topological magnetoelectric effect the authors put forth a theoretical proposal for its realization in the zero plateau quantum anomalous Hall state of a ferromagnet-topological insulator heterostructure. [Phys. Rev. B 92, 081107(R)] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Characterization of topological phase transitions via topological properties of transition points (2015)

Linhu Li and Shu Chen

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Linhu Li and Shu Chen We study topological properties of phase transition points of topological quantum phase transitions by assigning a topological invariant defined on a closed circle or surface surrounding the phase transition point in the parameter space of momentum and transition driving parameter. By applying our s… [Phys. Rev. B 92, 085118] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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Spherically symmetric solution of f(R,G) gravity at low energy (2015)

Bofeng Wu and Bo-Qiang Ma

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-11

Description: Author(s): Bofeng Wu and Bo-Qiang Ma The weak-field and slow-motion limit of f ( R , G ) gravity is developed up to ( v / c ) 4 order in a spherically symmetric background. Considering the Taylor expansion of a general function f around vanishing values of R and G , we present general vacuum solutions up to ( v / c ) 4 order for the gravitational fiel… [Phys. Rev. D 92, 044012] Published Mon Aug 10, 2015

Keywords: General Relativity and Gravitation

Print ISSN: 0556-2821

Electronic ISSN: 1089-4918

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Intrinsic curvature of thermodynamic potentials for black holes with critical points (2015)

Brian P. Dolan

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-12

Description: Author(s): Brian P. Dolan The geometry of thermodynamic state space is studied for asymptotically anti–de Sitter black holes in D -dimensional space-times. Convexity of thermodynamic potentials and the analytic structure of the response functions is analyzed. The thermodynamic potentials can be used to define a metric on the … [Phys. Rev. D 92, 044013] Published Tue Aug 11, 2015

Keywords: General Relativity and Gravitation

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Kondo physics in a Ni impurity embedded in O-doped Au chains (2015)

S. Di Napoli, M. A. Barral, P. Roura-Bas, L. O. Manuel, A. M. Llois, and A. A. Aligia

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-13

Description: Author(s): S. Di Napoli, M. A. Barral, P. Roura-Bas, L. O. Manuel, A. M. Llois, and A. A. Aligia By means of ab initio calculations we study the effect of O doping of Au chains containing a nanocontact represented by a Ni atom as a magnetic impurity. In contrast to pure Au chains, we find that with a minimum O doping the 5 d x z , y z states of Au are pushed up, crossing the Fermi level. We also find… [Phys. Rev. B 92, 085120] Published Wed Aug 12, 2015

Keywords: Electronic structure and strongly correlated systems

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Chiral triplet superconductivity on the graphene lattice (2015)

J. P. L. Faye, P. Sahebsara, and D. Sénéchal

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-13

Description: Author(s): J. P. L. Faye, P. Sahebsara, and D. Sénéchal Motivated by the possibility of superconductivity in doped graphene sheets, we investigate superconducting order in the extended Hubbard model on the two-dimensional graphene lattice using the variational cluster approximation (VCA) and the cellular dynamical mean-field theory (CDMFT) with an exact … [Phys. Rev. B 92, 085121] Published Wed Aug 12, 2015

Keywords: Electronic structure and strongly correlated systems

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Infinite matrix product states, boundary conformal field theory, and the open Haldane-Shastry model (2015)

Hong-Hao Tu and Germán Sierra

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-07-30

Description: Author(s): Hong-Hao Tu and Germán Sierra We show that infinite matrix product states (MPSs) constructed from conformal field theories can describe ground states of one-dimensional critical systems with open boundary conditions. To illustrate this, we consider a simple infinite MPS for a spin-1/2 chain and derive an inhomogeneous open Halda… [Phys. Rev. B 92, 041119(R)] Published Wed Jul 29, 2015

Keywords: Electronic structure and strongly correlated systems

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Topological states in a microscopic model of interacting fermions (2015)

Nicolai Lang and Hans Peter Büchler

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-07-30

Description: Author(s): Nicolai Lang and Hans Peter Büchler Motivated by the question of topological classification in interacting models the authors study an exactly solvable two-leg ladder model of spinless fermions with attractive interactions and find its ground states and correlation functions. They also demonstrate the appearance of topologically protected edge states and derive their braiding properties on a microscopic level. [Phys. Rev. B 92, 041118(R)] Published Wed Jul 29, 2015

Keywords: Electronic structure and strongly correlated systems

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Covalency in oxidized uranium (2015)

J. G. Tobin, S.-W. Yu, R. Qiao, W. L. Yang, C. H. Booth, D. K. Shuh, A. M. Duffin, D. Sokaras, D. Nordlund, and T.-C. Weng

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-07-30

Description: Author(s): J. G. Tobin, S.-W. Yu, R. Qiao, W. L. Yang, C. H. Booth, D. K. Shuh, A. M. Duffin, D. Sokaras, D. Nordlund, and T.-C. Weng Using x-ray emission spectroscopy and absorption spectroscopy, it has been possible to directly access the states in the unoccupied conduction bands that are involved with 5 f and 6 d covalency in oxidized uranium. By varying the oxidizing agent, the degree of 5 f covalency can be manipulated and monit… [Phys. Rev. B 92, 045130] Published Wed Jul 29, 2015

Keywords: Electronic structure and strongly correlated systems

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Large and small Fermi-surface spin density waves in the Kondo lattice model (2015)

Robert Peters and Norio Kawakami

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): Robert Peters and Norio Kawakami We demonstrate the existence of metallic spin density waves (SDWs) in the Kondo lattice model on a square lattice for a wide range of parameters by means of real space dynamical mean-field theory. In these SDWs, the spin polarization as well as the charge density depend on the lattice site and are m… [Phys. Rev. B 92, 075103] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Interactions along an entanglement cut in 2+1D Abelian topological phases (2015)

Jennifer Cano, Taylor L. Hughes, and Michael Mulligan

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): Jennifer Cano, Taylor L. Hughes, and Michael Mulligan A given fractional quantum Hall state may admit multiple, distinct edge phases on its boundary. We explore the implications that multiple edge phases have for the entanglement spectrum and entropy of a given bulk state. We describe the precise manner in which the entanglement spectrum depends upon l… [Phys. Rev. B 92, 075104] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Pseudopotential for the electron-electron interaction (2015)

J. H. Lloyd-Williams, R. J. Needs, and G. J. Conduit

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-06

Description: Author(s): J. H. Lloyd-Williams, R. J. Needs, and G. J. Conduit We propose a pseudopotential for the electron-electron Coulomb interaction to improve the efficiency of many-body electronic structure calculations. The pseudopotential accurately replicates the scattering properties of the Coulomb interaction, and recovers the analytical solution for two electrons … [Phys. Rev. B 92, 075106] Published Wed Aug 05, 2015

Keywords: Electronic structure and strongly correlated systems

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Non-Abelian phases in two-component ν=2/3 fractional quantum Hall states: Emergence of Fibonacci anyons (2015)

Zhao Liu, Abolhassan Vaezi, Kyungmin Lee, and Eun-Ah Kim

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-06

Description: Author(s): Zhao Liu, Abolhassan Vaezi, Kyungmin Lee, and Eun-Ah Kim Recent theoretical insights into the possibility of non-Abelian phases in ν = 2 / 3 fractional quantum Hall states revived the interest in the numerical phase diagram of the problem. We investigate the effect of various kinds of two-body interlayer couplings on the (330) bilayer state and exactly solve … [Phys. Rev. B 92, 081102(R)] Published Wed Aug 05, 2015

Keywords: Electronic structure and strongly correlated systems

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NMR evidence of anisotropic Kondo liquid behavior in CeIrIn_{5} (2015)

A. C. Shockley, K. R. Shirer, J. Crocker, A. P. Dioguardi, C. H. Lin, D. M. Nisson, N. ap; Roberts-Warren, P. Klavins, and N. J. Curro

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-06

Description: Author(s): A. C. Shockley, K. R. Shirer, J. Crocker, A. P. Dioguardi, C. H. Lin, D. M. Nisson, N. apRoberts-Warren, P. Klavins, and N. J. Curro We report detailed Knight-shift measurements of the two indium sites in the heavy-fermion compound CeIrIn 5 as a function of temperature and field orientation. We find that the Knight-shift anomaly is orientation dependent, with a crossover temperature T * that varies by 50% as the field is rotated fr… [Phys. Rev. B 92, 085108] Published Wed Aug 05, 2015

Keywords: Electronic structure and strongly correlated systems

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Scanning tunneling microscopy of the charge density wave in 1T−TiSe_{2} in the presence of single atom defects (2015)

A. M. Novello, B. Hildebrand, A. Scarfato, C. Didiot, G. Monney, A. Ubaldini, H. Berger, D. R. Bowler, P. Aebi, and Ch. Renner

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-06

Description: Author(s): A. M. Novello, B. Hildebrand, A. Scarfato, C. Didiot, G. Monney, A. Ubaldini, H. Berger, D. R. Bowler, P. Aebi, and Ch. Renner We present a detailed low-temperature scanning tunneling microscopy (STM) study of the commensurate charge density wave (CDW) in 1 T − TiSe 2 in the presence of single atom defects. We find no significant modification of the CDW lattice in single crystals with native defect concentrations where some bul… [Phys. Rev. B 92, 081101(R)] Published Tue Aug 04, 2015

Keywords: Electronic structure and strongly correlated systems

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Thermodynamic consistency of the charge response in dynamical mean-field based approaches (2015)

Erik G. C. P. van Loon, Hartmut Hafermann, Alexander I. Lichtenstein, and Mikhail I. Katsnelson

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-06

Description: Author(s): Erik G. C. P. van Loon, Hartmut Hafermann, Alexander I. Lichtenstein, and Mikhail I. Katsnelson We consider the thermodynamic consistency of the charge response function in the (extended) Hubbard model. In dynamical mean-field theory (DMFT), thermodynamic consistency is preserved. We prove that the static, homogeneous DMFT susceptibility is consistent as long as vertex corrections obtained fro… [Phys. Rev. B 92, 085106] Published Tue Aug 04, 2015

Keywords: Electronic structure and strongly correlated systems

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Renormalization group analysis of a neck-narrowing Lifshitz transition in the presence of weak short-range interactions in two dimensions (2015)

Sedigh Ghamari, Sung-Sik Lee, and Catherine Kallin

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): Sedigh Ghamari, Sung-Sik Lee, and Catherine Kallin We study a system of weakly interacting electrons described by the energy dispersion ξ ( k ) = k x 2 − k y 2 − μ in two dimensions within a renormalization group approach. This energy dispersion exhibits a neck-narrowing Lifshitz transition at the critical chemical potential μ c = 0 where a van Hove singularity dev… [Phys. Rev. B 92, 085112] Published Thu Aug 06, 2015

Keywords: Electronic structure and strongly correlated systems

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t_{2g} -orbital model on a honeycomb lattice: Application to the antiferromagnet SrRu_{2} O_{6} (2015)

Da Wang, Wan-Sheng Wang, and Qiang-Hua Wang

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): Da Wang, Wan-Sheng Wang, and Qiang-Hua Wang Motivated by the recent discovery of high-temperature antiferromagnet SrRu 2 O 6 [Hiley et al. , Angew. Chem. Int. Ed. 53 , 4423 (2014) ; Tian et al. , arXiv:1504.03642 ] and its potential to be the parent of a new superconductor upon doping, we construct a minimal t 2 g -orbital model on a honeycomb lattice… [Phys. Rev. B 92, 075112] Published Fri Aug 07, 2015

Keywords: Electronic structure and strongly correlated systems

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Dichroism as a probe for parity-breaking phases of spin-orbit coupled metals (2015)

M. R. Norman

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): M. R. Norman Recently, a general formalism was presented for gyrotropic, ferroelectric, and multipolar order in spin-orbit coupled metals induced by spin-spin interactions. Here, I point out that the resulting order parameters are equivalent to expectation values of operators that determine natural circular dich… [Phys. Rev. B 92, 075113] Published Fri Aug 07, 2015

Keywords: Electronic structure and strongly correlated systems

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Transport properties for a quantum dot coupled to normal leads with a pseudogap (2015)

Bunpei Hara, Akihisa Koga, and Tomosuke Aono

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): Bunpei Hara, Akihisa Koga, and Tomosuke Aono We study transport properties for a quantum dot coupled to normal leads with a pseudogap density of states at zero temperature, using the second-order perturbation theory based on the Keldysh formalism. We clarify that the hybridization function Γ ( ω ) ∝ | ω | r ( 0 ≤ r 〈 1 ) induces the cusp or dip structure … [Phys. Rev. B 92, 081103(R)] Published Thu Aug 06, 2015

Keywords: Electronic structure and strongly correlated systems

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New constraints on f(R) gravity from clusters of galaxies (2015)

Matteo Cataneo, David Rapetti, Fabian Schmidt, Adam B. Mantz, Steven W. Allen, Douglas E. Applegate, Patrick L. Kelly, Anja von der Linden, and R. Glenn Morris

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-08

Description: Author(s): Matteo Cataneo, David Rapetti, Fabian Schmidt, Adam B. Mantz, Steven W. Allen, Douglas E. Applegate, Patrick L. Kelly, Anja von der Linden, and R. Glenn Morris The abundance of massive galaxy clusters is a powerful probe of departures from general relativity (GR) on cosmic scales. Despite current stringent constraints placed by stellar and galactic tests, on larger scales alternative theories of gravity such as f ( R ) can still work as effective theories. He… [Phys. Rev. D 92, 044009] Published Fri Aug 07, 2015

Keywords: General Relativity and Gravitation

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Determination of Tomonaga-Luttinger parameters for a two-component liquid (2015)

Olabode M. Sule, Hitesh J. Changlani, Isao Maruyama, and Shinsei Ryu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-19

Description: Author(s): Olabode M. Sule, Hitesh J. Changlani, Isao Maruyama, and Shinsei Ryu We provide evidence for the mapping of critical spin-1 chains, in particular the SU ( 3 ) symmetric bilinear-biquadratic model with additional interactions, to free boson theories using exact diagonalization and the density-matrix renormalization-group algorithm. Using the correspondence with a conform… [Phys. Rev. B 92, 075128] Published Tue Aug 18, 2015

Keywords: Electronic structure and strongly correlated systems

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Large-gap quantum spin Hall states in decorated stanene grown on a substrate (2015)

Yong Xu, Peizhe Tang, and Shou-Cheng Zhang

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-19

Description: Author(s): Yong Xu, Peizhe Tang, and Shou-Cheng Zhang Two-dimensional stanene is a promising candidate material for realizing a room-temperature quantum spin Hall (QSH) effect. Monolayer stanene has recently been fabricated by molecular beam epitaxy, but shows metallic features on a Bi 2 Te 3 (111) substrate, which motivates us to study the important influ… [Phys. Rev. B 92, 081112(R)] Published Tue Aug 18, 2015

Keywords: Electronic structure and strongly correlated systems

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Parameter estimation of eccentric inspiraling compact binaries using an enhanced post circular model for ground-based detectors (2015)

Baosan Sun, Zhoujian Cao, Yan Wang, and Hsien-Chi Yeh

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-20

Description: Author(s): Baosan Sun, Zhoujian Cao, Yan Wang, and Hsien-Chi Yeh Inspiraling compact binaries have been identified as one of the most promising sources for gravitational-wave detection. These binaries are always expected to have been circularized by the gravitational radiation when they enter the detector’s frequency band. However, recent studies indicate that so… [Phys. Rev. D 92, 044034] Published Wed Aug 19, 2015

Keywords: General Relativity and Gravitation

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Testing the nonlocal kinetic energy functional of an inhomogeneous, two-dimensional degenerate Fermi gas within the average density approximation (2015)

J. Towers, B. P. van Zyl, and W. Kirkby

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-21

Description: Author(s): J. Towers, B. P. van Zyl, and W. Kirkby In a recent paper [B. P. van Zyl et al. , Phys. Rev. A 89 , 022503 (2014) ], the average density approximation (ADA) was implemented to develop a parameter-free, nonlocal kinetic energy functional to be used in the orbital-free density functional theory of an inhomogeneous, two-dimensional (2D) Fermi … [Phys. Rev. B 92, 075129] Published Thu Aug 20, 2015

Keywords: Electronic structure and strongly correlated systems

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Manifestations of topological band crossings in bulk entanglement spectrum: An analytical study for integer quantum Hall states (2015)

Chi-Ken Lu, Dah-Wei Chiou, and Feng-Li Lin

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-21

Description: Author(s): Chi-Ken Lu, Dah-Wei Chiou, and Feng-Li Lin We consider integer quantum Hall states and calculate the bulk entanglement spectrum by formulating the correlation matrix in the guiding center representation. Our analytical approach is based on the strategy of redefining the inner product of states in the Hilbert space, via a projection operator,… [Phys. Rev. B 92, 075130] Published Thu Aug 20, 2015

Keywords: Electronic structure and strongly correlated systems

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Incomplete protection of the surface Weyl cones of the Kondo insulator SmB_{6} : Spin exciton scattering (2015)

G. A. Kapilevich, P. S. Riseborough, A. X. Gray, M. Gulacsi, Tomasz Durakiewicz, and J. L. Smith

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-21

Description: Author(s): G. A. Kapilevich, P. S. Riseborough, A. X. Gray, M. Gulacsi, Tomasz Durakiewicz, and J. L. Smith The compound SmB 6 is a Kondo insulator, where the lowest-energy bulk electronic excitations are spin-excitons. It also has surface states that are subjected to strong spin-orbit coupling. It has been suggested that SmB 6 is also a topological insulator. Here we show that, despite the absence of time-… [Phys. Rev. B 92, 085133] Published Thu Aug 20, 2015

Keywords: Electronic structure and strongly correlated systems

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Real-space Eliashberg approach to charge order of electrons coupled to dynamic antiferromagnetic fluctuations (2015)

Johannes Bauer and Subir Sachdev

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-21

Description: Author(s): Johannes Bauer and Subir Sachdev We study charge-ordered solutions for fermions on a square lattice interacting with dynamic antiferromagnetic fluctuations. Our approach is based on real-space Eliashberg equations, which are solved self-consistently. We first show that the antiferromagnetic fluctuations can induce arc features in t… [Phys. Rev. B 92, 085134] Published Thu Aug 20, 2015

Keywords: Electronic structure and strongly correlated systems

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Disformal dark energy at colliders (2015)

Philippe Brax, Clare Burrage, and Christoph Englert

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-21

Description: Author(s): Philippe Brax, Clare Burrage, and Christoph Englert Disformally coupled, light scalar fields arise in many of the theories of dark energy and modified gravity that attempt to explain the accelerated expansion of the Universe. They have proved difficult to constrain with precision tests of gravity because they do not give rise to fifth forces around s… [Phys. Rev. D 92, 044036] Published Thu Aug 20, 2015

Keywords: General Relativity and Gravitation

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Electronic spin susceptibilities and superconductivity in HgBa_{2} CuO_{4+δ} from nuclear magnetic resonance (2015)

Damian Rybicki, Jonas Kohlrautz, Jürgen Haase, Martin Greven, Xudong Zhao, Mun K. Chan, Chelsey J. Dorow, and Michael J. Veit

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-25

Description: Author(s): Damian Rybicki, Jonas Kohlrautz, Jürgen Haase, Martin Greven, Xudong Zhao, Mun K. Chan, Chelsey J. Dorow, and Michael J. Veit Nuclear magnetic resonance (NMR) experiments on single crystals of HgBa 2 CuO 4 + δ are presented that identify two distinct temperature-dependent spin susceptibilities: One is due to a spin component that is temperature-dependent above the critical temperature for superconductivity ( T c ) and reflects pse… [Phys. Rev. B 92, 081115(R)] Published Mon Aug 24, 2015

Keywords: Electronic structure and strongly correlated systems

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Sr_{2} Ir_{1−x} Rh_{x} O_{4} (x〈0.5): An inhomogeneous j_{eff} =1/2 Hubbard system (2015)

Shalinee Chikara, Daniel Haskel, Jae-Hoon Sim, Heung-Sik Kim, Cheng-Chien Chen, G. Fabbris, L. S. I. Veiga, N. M. Souza-Neto, J. Terzic, K. Butrouna, G. Cao, Myung Joon Han, and Michel van Veenendaal

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-25

Description: Author(s): Shalinee Chikara, Daniel Haskel, Jae-Hoon Sim, Heung-Sik Kim, Cheng-Chien Chen, G. Fabbris, L. S. I. Veiga, N. M. Souza-Neto, J. Terzic, K. Butrouna, G. Cao, Myung Joon Han, and Michel van Veenendaal In a combined experimental and theoretical study, we investigate the properties of Sr 2 Ir 1 − x Rh x O 4 . From the branching ratios of the L -edge isotropic x-ray absorption spectra, we determine that the spin-orbit coupling is remarkably independent of x for both iridium and rhodium sites. DFT + U calculation… [Phys. Rev. B 92, 081114(R)] Published Mon Aug 24, 2015

Keywords: Electronic structure and strongly correlated systems

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Spatially resolved Landau level spectroscopy of the topological Dirac cone of bulk-type Sb_{2} Te_{3} (0001): Potential fluctuations and quasiparticle lifetime (2015)

C. Pauly, C. Saunus, M. Liebmann, and M. Morgenstern

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-25

Description: Author(s): C. Pauly, C. Saunus, M. Liebmann, and M. Morgenstern Using low-temperature scanning tunneling spectroscopy, we probe the Landau levels of the topologically protected state of Sb 2 Te 3 (0001) after in situ cleavage of a single crystal. Landau levels are visible for magnetic fields B ≥ 2 T at energies, which confirm the Dirac type dispersion including the ze… [Phys. Rev. B 92, 085140] Published Mon Aug 24, 2015

Keywords: Electronic structure and strongly correlated systems

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Camelback-shaped band reconciles heavy-electron behavior with weak electronic Coulomb correlations in superconducting TlNi_{2} Se_{2} (2015)

N. Xu, C. E. Matt, P. Richard, A. van Roekeghem, S. Biermann, X. Shi, S.-F. Wu, H. W. Liu, D. Chen, T. Qian, N. C. Plumb, M. Radović, Hangdong Wang, Qianhui Mao, Jianhua Du, Minghu Fang, J. Mesot, H. Ding, and M. Shi

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-25

Description: Author(s): N. Xu, C. E. Matt, P. Richard, A. van Roekeghem, S. Biermann, X. Shi, S.-F. Wu, H. W. Liu, D. Chen, T. Qian, N. C. Plumb, M. Radović, Hangdong Wang, Qianhui Mao, Jianhua Du, Minghu Fang, J. Mesot, H. Ding, and M. Shi Combining photoemission spectroscopy, Raman spectroscopy, and first-principles calculations, we characterize superconducting TlNi 2 Se 2 as a material with weak electronic Coulomb correlations leading to a bandwidth renormalization of 1.4. We identify a camelback-shaped band, whose energetic position s… [Phys. Rev. B 92, 081116(R)] Published Mon Aug 24, 2015

Keywords: Electronic structure and strongly correlated systems

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Metal-insulator transition and local-moment collapse in FeO under pressure (2015)

I. Leonov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-25

Description: Author(s): I. Leonov We employ a combination of the ab initio band-structure methods and dynamical mean-field theory to determine the electronic structure and phase stability of paramagnetic FeO at high pressure and temperature. Our results reveal a high-spin to low-spin transition within the B1 crystal structure of FeO… [Phys. Rev. B 92, 085142] Published Mon Aug 24, 2015

Keywords: Electronic structure and strongly correlated systems

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Dynamic conductivity scaling in photoexcited V_{2} O_{3} thin films (2015)

Elsa Abreu, Siming Wang, Juan Gabriel Ramírez, Mengkun Liu, Jingdi Zhang, Kun Geng, Ivan K. Schuller, and Richard D. Averitt

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-19

Description: Author(s): Elsa Abreu, Siming Wang, Juan Gabriel Ramírez, Mengkun Liu, Jingdi Zhang, Kun Geng, Ivan K. Schuller, and Richard D. Averitt Optical-pump terahertz-probe spectroscopy is used to investigate ultrafast far-infrared conductivity dynamics during the insulator-to-metal transition in vanadium sesquioxide ( V 2 O 3 ) . The resultant conductivity increase occurs on a tens of picosecond time scale, exhibiting a strong dependence on the … [Phys. Rev. B 92, 085130] Published Tue Aug 18, 2015

Keywords: Electronic structure and strongly correlated systems

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Robust Josephson-Kondo screening cloud in circuit quantum electrodynamics (2015)

Izak Snyman and Serge Florens

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-19

Description: Author(s): Izak Snyman and Serge Florens We investigate the entanglement properties of a standard circuit-QED setup that consists of a Cooper pair box coupled to a long chain of Josephson junctions. We calculate the static charge polarization at finite distances along the device. Our calculations reveal a deep connection to the Kondo scree… [Phys. Rev. B 92, 085131] Published Tue Aug 18, 2015

Keywords: Electronic structure and strongly correlated systems

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Interplay of electron-electron and electron-phonon interactions in the low-temperature phase of 1T−TaS_{2} (2015)

Doohee Cho, Yong-Heum Cho, Sang-Wook Cheong, Ki-Seok Kim, and Han Woong Yeom

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-19

Description: Author(s): Doohee Cho, Yong-Heum Cho, Sang-Wook Cheong, Ki-Seok Kim, and Han Woong Yeom We investigate the interplay of the electron-electron and electron-phonon interactions in the electronic structure of an exotic insulating state in the layered dichalcogenide 1 T − TaS 2 , where the charge-density-wave (CDW) order coexists with a Mott correlation gap. Scanning tunneling microscopy and sp… [Phys. Rev. B 92, 085132] Published Tue Aug 18, 2015

Keywords: Electronic structure and strongly correlated systems

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Bekenstein bounds and inequalities between size, charge, angular momentum, and energy for bodies (2015)

Sergio Dain

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-20

Description: Author(s): Sergio Dain Bekenstein bounds for the entropy of a body imply a universal inequality between size, energy, angular momentum, and charge. We prove this inequality in electromagnetism. We also prove it, for the particular case of zero angular momentum, in general relativity. We further discuss the relation of the… [Phys. Rev. D 92, 044033] Published Wed Aug 19, 2015

Keywords: General Relativity and Gravitation

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Quantum oscillations in the heavy-fermion compound YbPtBi (2015)

E. Mun, S. L. Bud'ko, Y. Lee, C. Martin, M. A. Tanatar, R. Prozorov, and P. C. Canfield

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-21

Description: Author(s): E. Mun, S. L. Bud'ko, Y. Lee, C. Martin, M. A. Tanatar, R. Prozorov, and P. C. Canfield Heavy fermion systems are useful for studying quantum criticality because the low energy scale associated with their large effective mass can be tuned by nonthermal control parameters. Here, Shubnikov-de Haas oscillations are observed in YbPtBi, a heavy fermion compound with an exceptionally large effective mass for electrons, at a high magnetic field that reveals the shape of the Fermi surface. In the future these observations, when combined with additional data at lower magnetic fields, could provide important information about quantum criticality in these systems. [Phys. Rev. B 92, 085135] Published Thu Aug 20, 2015

Keywords: Electronic structure and strongly correlated systems

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Dynamical and anharmonic effects on the electron-phonon coupling and the zero-point renormalization of the electronic structure (2015)

G. Antonius, S. Poncé, E. Lantagne-Hurtubise, G. Auclair, X. Gonze, and M. Côté

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-22

Description: Author(s): G. Antonius, S. Poncé, E. Lantagne-Hurtubise, G. Auclair, X. Gonze, and M. Côté The renormalization of the band structure at zero temperature due to electron-phonon coupling is explored in diamond, BN, LiF, and MgO crystals. We implement a dynamical scheme to compute the frequency-dependent self-energy and the resulting quasiparticle electronic structure. Our calculations revea… [Phys. Rev. B 92, 085137] Published Fri Aug 21, 2015

Keywords: Electronic structure and strongly correlated systems

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Electron-phonon coupling in a system with broken symmetry: Surface of Be(0001) (2015)

Te; Yu Chien (簡德宇), Xiaobo He, Sung-Kwan Mo, Makoto Hashimoto, Zahid Hussain, Zhi-Xun Shen, and E. W. Plummer

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-22

Description: Author(s): TeYu Chien (簡德宇), Xiaobo He, Sung-Kwan Mo, Makoto Hashimoto, Zahid Hussain, Zhi-Xun Shen, and E. W. Plummer The momentum-resolved Eliashberg function (ELF) α 2 F ( ω , k ⇀ ) for the Be ( 0001 ) zone-center surface state was extracted from the high-quality angle-resolved photoemission spectroscopy (ARPES) data at the Fermi energy in the Γ ¯ → M ¯ direction, displaying ten peaks. A comparison of the peaks in the ELF to th… [Phys. Rev. B 92, 075133] Published Fri Aug 21, 2015

Keywords: Electronic structure and strongly correlated systems

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Chiral degeneracies and Fermi-surface Chern numbers in bcc Fe (2015)

Daniel Gosálbez-Martínez, Ivo Souza, and David Vanderbilt

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-22

Description: Author(s): Daniel Gosálbez-Martínez, Ivo Souza, and David Vanderbilt Using bcc Fe as a playground, the authors investigate the presence of chiral degeneracies in realistic band structures of ferromagnetic materials. They find ubiquitous Weyl points and demonstrate that Chern numbers can be transferred between Fermi sheets by varying the Fermi level or an external parameter such as the magnetization direction. [Phys. Rev. B 92, 085138] Published Fri Aug 21, 2015

Keywords: Electronic structure and strongly correlated systems

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New scalar constraint operator for loop quantum gravity (2015)

Mehdi Assanioussi, Jerzy Lewandowski, and Ilkka Mäkinen

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-22

Description: Author(s): Mehdi Assanioussi, Jerzy Lewandowski, and Ilkka Mäkinen We present a concrete and explicit construction of a new scalar constraint operator for loop quantum gravity. The operator is defined on the recently introduced space of partially diffeomorphism invariant states, and this space is preserved by the action of the operator. To define the Euclidean part… [Phys. Rev. D 92, 044042] Published Fri Aug 21, 2015

Keywords: General Relativity and Gravitation

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Compression of correlation matrices and an efficient method for forming matrix product states of fermionic Gaussian states (2015)

Matthew T. Fishman and Steven R. White

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-22

Description: Author(s): Matthew T. Fishman and Steven R. White Here we present an efficient and numerically stable procedure for compressing a correlation matrix into a set of local unitary single-particle gates, which leads to a very efficient way of forming the matrix product state (MPS) approximation of a pure fermionic Gaussian state, such as the ground sta… [Phys. Rev. B 92, 075132] Published Fri Aug 21, 2015

Keywords: Electronic structure and strongly correlated systems

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Energy in first order 2+1 gravity (2015)

Alejandro Corichi and Iraís Rubalcava-García

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-22

Description: Author(s): Alejandro Corichi and Iraís Rubalcava-García We consider Λ = 0 three-dimensional gravity with asymptotically flat boundary conditions. This system was studied by Ashtekar and Varadarajan within the second-order formalism—with metric variables—who showed that the Regge-Teitelboim formalism yields a consistent Hamiltonian description where, surpri… [Phys. Rev. D 92, 044040] Published Fri Aug 21, 2015

Keywords: General Relativity and Gravitation

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Low-energy model and electron-hole doping asymmetry of single-layer Ruddlesden-Popper iridates (2015)

Alexander Hampel, Christoph Piefke, and Frank Lechermann

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-25

Description: Author(s): Alexander Hampel, Christoph Piefke, and Frank Lechermann We study the correlated electronic structure of single-layer iridates based on structurally undistorted Ba 2 IrO 4 . Starting from the first-principles band structure, the interplay between local Coulomb interactions and spin-orbit coupling is investigated by means of rotational-invariant slave-boson me… [Phys. Rev. B 92, 085141] Published Mon Aug 24, 2015

Keywords: Electronic structure and strongly correlated systems

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Classical resolution of black hole singularities in arbitrary dimension (2015)

D. Bazeia, L. Losano, Gonzalo J. Olmo, D. Rubiera-Garcia, and A. Sanchez-Puente

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-13

Description: Author(s): D. Bazeia, L. Losano, Gonzalo J. Olmo, D. Rubiera-Garcia, and A. Sanchez-Puente A metric-affine approach is employed to study higher-dimensional modified gravity theories involving different powers and contractions of the Ricci tensor. It is shown that the field equations are always second-order, as opposed to the standard metric approach, where this is only achieved for Lagran… [Phys. Rev. D 92, 044018] Published Wed Aug 12, 2015

Keywords: General Relativity and Gravitation

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Near-horizon circular orbits and extremal limit for dirty rotating black holes (2015)

O. B. Zaslavskii

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-13

Description: Author(s): O. B. Zaslavskii We consider generic rotating axially symmetric “dirty” (surrounded by matter) black holes. Near-horizon circular equatorial orbits are examined in two different cases of near-extremal (small surface gravity κ ) and exactly extremal black holes. This has a number of qualitative distinctions. In the fi… [Phys. Rev. D 92, 044017] Published Wed Aug 12, 2015

Keywords: General Relativity and Gravitation

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Nonequilibrium transport and statistics of Schwinger pair production in Weyl semimetals (2015)

Szabolcs Vajna, Balázs Dóra, and R. Moessner

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-15

Description: Author(s): Szabolcs Vajna, Balázs Dóra, and R. Moessner The nonequilibrium dynamics beyond the linear response of Weyl semimetals is studied after a sudden switching on of a dc electric field. The resulting current is a nonmonotonic function of time with an initial quick increase in polarization current followed by a power-law decay. Particle-hole creati… [Phys. Rev. B 92, 085122] Published Thu Aug 13, 2015

Keywords: Electronic structure and strongly correlated systems

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Higher-dimensional thin-shell wormholes in third-order Lovelock gravity (2015)

Mohammad Reza Mehdizadeh, Mahdi Kord Zangeneh, and Francisco S. N. Lobo

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-15

Description: Author(s): Mohammad Reza Mehdizadeh, Mahdi Kord Zangeneh, and Francisco S. N. Lobo In this paper, we explore asymptotically flat charged thin-shell wormholes of third order Lovelock gravity in higher dimensions, taking into account the cut-and-paste technique. Using the generalized junction conditions, we determine the energy-momentum tensor of these solutions on the shell, and ex… [Phys. Rev. D 92, 044022] Published Fri Aug 14, 2015

Keywords: General Relativity and Gravitation

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Gauge and motion in perturbation theory (2015)

Adam Pound

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-15

Description: Author(s): Adam Pound Through second order in perturbative general relativity, a small compact object in an external vacuum spacetime obeys a generalized equivalence principle: although it is accelerated with respect to the external background geometry, it is in free fall with respect to a certain effective vacuum geomet… [Phys. Rev. D 92, 044021] Published Fri Aug 14, 2015

Keywords: General Relativity and Gravitation

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Cluster-based mean-field and perturbative description of strongly correlated fermion systems: Application to the one- and two-dimensional Hubbard model (2015)

Carlos A. Jiménez-Hoyos and Gustavo E. Scuseria

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): Carlos A. Jiménez-Hoyos and Gustavo E. Scuseria We introduce a mean-field and a perturbative approach, based on clusters, to describe the ground state of fermionic strongly correlated systems. In the cluster mean-field approach, the ground-state wave function is written as a simple tensor product over optimized cluster states. The optimization of… [Phys. Rev. B 92, 085101] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Wannier function approach to realistic Coulomb interactions in layered materials and heterostructures (2015)

M. Rösner, E. Şaşıoğlu, C. Friedrich, S. Blügel, and T. O. Wehling

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): M. Rösner, E. Şaşıoğlu, C. Friedrich, S. Blügel, and T. O. Wehling We introduce an approach to derive realistic Coulomb interaction terms in freestanding layered materials and vertical heterostructures from ab initio modeling of the corresponding bulk materials. To this end, we establish a combination of calculations within the framework of the constrained random-p… [Phys. Rev. B 92, 085102] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Anomalous quantum Hall effect induced by disorder in topological insulators (2015)

Laurent Raymond, Alberto D. Verga, and Arnaud Demion

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): Laurent Raymond, Alberto D. Verga, and Arnaud Demion We investigate a transition between a two-dimensional topological insulator conduction state, characterized by a conductance G = 2 (in fundamental units e 2 / h ) and a Chern insulator with G = 1 , induced by polarized magnetic impurities. Two kinds of coupling, ferromagnetic and antiferromagnetic, are consi… [Phys. Rev. B 92, 075101] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Robust local and nonlocal transport in the topological Kondo insulator SmB_{6} in the presence of a high magnetic field (2015)

Sangram Biswas, Ramya Nagarajan, Suman Sarkar, Kazi Rafsanjani Amin, M. Ciomaga Hatnean, S. Tewari, G. Balakrishnan, and Aveek Bid

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): Sangram Biswas, Ramya Nagarajan, Suman Sarkar, Kazi Rafsanjani Amin, M. Ciomaga Hatnean, S. Tewari, G. Balakrishnan, and Aveek Bid SmB 6 has been predicted to be a Kondo topological insulator with topologically protected conducting surface states. We have studied quantitatively the electrical transport through surface states in high-quality single crystals of SmB 6 . We observe a large nonlocal surface signal at temperatures lower… [Phys. Rev. B 92, 085103] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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FLEX+DMFT approach to the d-wave superconducting phase diagram of the two-dimensional Hubbard model (2015)

Motoharu Kitatani, Naoto Tsuji, and Hideo Aoki

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): Motoharu Kitatani, Naoto Tsuji, and Hideo Aoki The dynamical mean-field theory (DMFT) combined with the fluctuation exchange (FLEX) method, namely, FLEX+DMFT, is an approach for correlated electron systems to incorporate both local and nonlocal long-range correlations in a self-consistent manner. We formulate FLEX+DMFT in a systematic way starti… [Phys. Rev. B 92, 085104] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Tensor modes in bigravity: Primordial to present (2015)

Matthew C. Johnson and Alexandra Terrana

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-04

Description: Author(s): Matthew C. Johnson and Alexandra Terrana Massive bigravity, a theoretically consistent modification of general relativity with an additional dynamical rank-two tensor, successfully describes the observed accelerated expansion of the Universe without a cosmological constant. Recent analyses of perturbations around a cosmological background … [Phys. Rev. D 92, 044001] Published Mon Aug 03, 2015

Keywords: General Relativity and Gravitation

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Quasilocal rotating conformal Killing horizons (2015)

Ayan Chatterjee and Avirup Ghosh

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-04

Description: Author(s): Ayan Chatterjee and Avirup Ghosh The formulation of quasilocal conformal Killing horizons (CKH) is extended to include rotation. This necessitates that the horizon be foliated by 2-spheres which may be distorted. Matter degrees of freedom which fall through the horizon are represented by a real scalar field. We show that these rota… [Phys. Rev. D 92, 044003] Published Mon Aug 03, 2015

Keywords: General Relativity and Gravitation

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Plane wave holonomies in quantum gravity. II. A sine wave solution (2015)

Donald E. Neville

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-04

Description: Author(s): Donald E. Neville This paper constructs an approximate sinusoidal wave packet solution to the equations of canonical gravity. The theory uses holonomy-flux variables with support on a lattice ( LHF = lattice − holonomy flux ). There is an SU(2) holonomy on each edge of the LHF simplex, and the goal is to study the behavior… [Phys. Rev. D 92, 044006] Published Mon Aug 03, 2015

Keywords: General Relativity and Gravitation

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Experimental mathematics meets gravitational self-force (2015)

Nathan K. Johnson-Mc; Daniel, Abhay G. Shah, and Bernard F. Whiting

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-06

Description: Author(s): Nathan K. Johnson-McDaniel, Abhay G. Shah, and Bernard F. Whiting This paper provides a means of extracting analytical expressions for Post-Newtonian expansion coefficients from accurate numerical work. It should prove extremely useful, especially to the growing community involved in detailed numerical work in General Relativity. [Phys. Rev. D 92, 044007] Published Tue Aug 04, 2015

Keywords: General Relativity and Gravitation

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Composition and temperature dependence of the Yb valence in YbMn_{6} Ge_{6−x} Sn_{x} studied by RIXS (2015)

T. Mazet, D. Malterre, M. François, L. Eichenberger, M. Grioni, C. Dallera, and G. Monaco

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-06

Description: Author(s): T. Mazet, D. Malterre, M. François, L. Eichenberger, M. Grioni, C. Dallera, and G. Monaco We investigate the composition and temperature (10–450 K) dependence of the Yb valence in YbMn 6 Ge 6 − x Sn x ( x = 0.0 , 3.8, 4.2, 4.4, and 5.5) using resonant inelastic x-ray scattering (RIXS). The observed change in the Yb valence with composition (from υ ∼ 3 for x = 0 to υ ∼ 2.7 for x = 5.5 ) is likely driven by n… [Phys. Rev. B 92, 075105] Published Wed Aug 05, 2015

Keywords: Electronic structure and strongly correlated systems

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Post-measurement bipartite entanglement entropy in conformal field theories (2015)

M. A. Rajabpour

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-06

Description: Author(s): M. A. Rajabpour We derive exact formulas for bipartite von Neumann entanglement entropy after partial projective local measurement in ( 1 + 1 ) -dimensional conformal field theories with periodic and open boundary conditions. After defining the setup we will check numerically the validity of our results in the case of K… [Phys. Rev. B 92, 075108] Published Wed Aug 05, 2015

Keywords: Electronic structure and strongly correlated systems

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Surface states of perovskite iridates AIrO_{3}: Signatures of a topological crystalline metal with nontrivial Z_{2} index (2015)

Heung-Sik Kim, Yige Chen, and Hae-Young Kee

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-06-06

Description: Author(s): Heung-Sik Kim, Yige Chen, and Hae-Young Kee There have been increasing efforts in realizing topological metallic phases with nontrivial surface states. It was suggested that orthorhombic perovskite iridates are classified as a topological crystalline metal (TCM) with flat surface states protected by lattice symmetries. Here we perform first-p... [Phys. Rev. B 91, 235103] Published Wed Jun 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Charge transport in Ho_{x}Lu_{1−x}B_{12}: Separating positive and negative magnetoresistance in metals with magnetic ions (2015)

N. E. Sluchanko, A. L. Khoroshilov, M. A. Anisimov, A. N. Azarevich, A. V. Bogach, V. V. Glushkov, S. V. Demishev, V. N. Krasnorussky, N. A. Samarin, N. Yu. Shitsevalova, V. B. Filippov, A. V. Levchenko, G. Pristas, S. Gabani, and K. Flachbart

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-06-06

Description: Author(s): N. E. Sluchanko, A. L. Khoroshilov, M. A. Anisimov, A. N. Azarevich, A. V. Bogach, V. V. Glushkov, S. V. Demishev, V. N. Krasnorussky, N. A. Samarin, N. Yu. Shitsevalova, V. B. Filippov, A. V. Levchenko, G. Pristas, S. Gabani, and K. Flachbart The magnetoresistance (MR) Δ ρ / ρ of the cage-glass compound Ho x Lu 1 − x B 12 with various concentrations of magnetic holmium ions ( x ≤ 0.5 ) has been studied in detail concurrently with magnetization M ( T ) and Hall effect investigations on high-quality single crystals at temperatures 1.9–120 K and in magnetic... [Phys. Rev. B 91, 235104] Published Wed Jun 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Casimir effect mechanism of pairing between fermions in the vicinity of a magnetic quantum critical point (2015)

Yaroslav A. Kharkov and Oleg P. Sushkov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-06-06

Description: Author(s): Yaroslav A. Kharkov and Oleg P. Sushkov We consider two spin- 1 / 2 fermions in a two-dimensional magnetic system that is close to the O ( 3 ) magnetic quantum critical point (QCP) which separates magnetically ordered and disordered phases. Focusing on the disordered phase in the vicinity of the QCP, we demonstrate that the criticality results ... [Phys. Rev. B 91, 235105] Published Wed Jun 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Real-time observation of collective excitations in photoemission (2015)

C. Lemell, S. Neppl, G. Wachter, K. Tőkési, R. Ernstorfer, P. Feulner, R. Kienberger, and J. Burgdörfer

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-06-06

Description: Author(s): C. Lemell, S. Neppl, G. Wachter, K. Tőkési, R. Ernstorfer, P. Feulner, R. Kienberger, and J. Burgdörfer A method is proposed to solve a longstanding problem in photoelectron spectroscopy: the determination of the branching ratio between intrinsic and extrinsic plasmon generation. Attosecond metrology in combination with model simulations allow for a disentanglement of these excitation channels providing novel insight into the many-electron response of metals. [Phys. Rev. B 91, 241101(R)] Published Wed Jun 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Observation of the Kondo effect in a quadruple quantum dot (2015)

Runan Shang, Hai-Ou Li, Gang Cao, Guodong Yu, Ming Xiao, Tao Tu, Guang-Can Guo, Hongwen Jiang, A. M. Chang, and Guo-Ping Guo

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-06-06

Description: Author(s): Runan Shang, Hai-Ou Li, Gang Cao, Guodong Yu, Ming Xiao, Tao Tu, Guang-Can Guo, Hongwen Jiang, A. M. Chang, and Guo-Ping Guo We investigate the Kondo effect in a quadruple-quantum-dot device of coupled double quantum dots (DQDs), which simultaneously contain intra-DQD and inter-DQD coupling. A variety of novel behaviors are observed. The differential conductance dI / dV is measured in the upper DQDs as a function of source ... [Phys. Rev. B 91, 245102] Published Tue Jun 02, 2015

Keywords: Electronic structure and strongly correlated systems

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Virtual topological insulators with real quantized physics (2015)

Emil Prodan

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-06-06

Description: Author(s): Emil Prodan A concrete strategy is presented for generating strong topological insulators in d + d ′ dimensions which have quantized physics in d dimensions. Here, d counts the physical and d ′ the virtual dimensions. It consists of seeking d -dimensional representations of operator algebras which are usually define... [Phys. Rev. B 91, 245104] Published Wed Jun 03, 2015

Keywords: Electronic structure and strongly correlated systems

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Entangled squeezed states in noncommutative spaces with minimal length uncertainty relations (2015)

Sanjib Dey and Véronique Hussin

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-06-06

Description: Author(s): Sanjib Dey and Véronique Hussin We provide an explicit construction of entangled states in a noncommutative space with nonclassical states, particularly with the squeezed states. Noncommutative systems are found to be more entangled than the usual quantum mechanical systems. The noncommutative parameter provides an additional degr... [Phys. Rev. D 91, 124017] Published Thu Jun 04, 2015

Keywords: General Relativity and Gravitation

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Black hole initial data without elliptic equations (2015)

István Rácz and Jeffrey Winicour

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-06-06

Description: Author(s): István Rácz and Jeffrey Winicour We explore whether a new method to solve the constraints of Einstein’s equations can be applied to provide initial data for black holes. We show that this method, which does not involve elliptic equations, can be successfully applied to a nonlinear perturbation of a Schwarzschild black hole by estab... [Phys. Rev. D 91, 124013] Published Wed Jun 03, 2015

Keywords: General Relativity and Gravitation

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Comparison between self-force and post-Newtonian dynamics: Beyond circular orbits (2015)

Sarp Akcay, Alexandre Le Tiec, Leor Barack, Norichika Sago, and Niels Warburton

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-06-06

Description: Author(s): Sarp Akcay, Alexandre Le Tiec, Leor Barack, Norichika Sago, and Niels Warburton The gravitational self-force (GSF) and post-Newtonian (PN) schemes are complementary approximation methods for modeling the dynamics of compact binary systems. Comparison of their results in an overlapping domain of validity provides a crucial test for both methods and can be used to enhance their a... [Phys. Rev. D 91, 124014] Published Wed Jun 03, 2015

Keywords: General Relativity and Gravitation

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Physical infeasibility of geodesic dissipative dust as a source of gravitational radiation (2015)

L. Herrera, A. Di Prisco, and J. Ospino

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-06-06

Description: Author(s): L. Herrera, A. Di Prisco, and J. Ospino Using a framework based on the 1 + 3 formalism, we show that a source represented by a geodesic, dissipative, rotational dust, endowed with axial and reflection symmetry, violates regularity conditions at the center of the fluid distribution unless the dissipative flux vanishes. In this latter case, t... [Phys. Rev. D 91, 124015] Published Wed Jun 03, 2015

Keywords: General Relativity and Gravitation

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82

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Post-Newtonian effects on the stability of the triangular solution in the three-body problem for general masses (2015)

Kei Yamada, Takuya Tsuchiya, and Hideki Asada

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-06-06

Description: Author(s): Kei Yamada, Takuya Tsuchiya, and Hideki Asada Continuing work initiated in earlier publications [T. Ichita et al. , Phys. Rev. D 83 , 084026 (2011); K. Yamada and H. Asada, Phys. Rev. D 86 , 124029 (2012)], we examine the post-Newtonian (PN) effects on the stability of the triangular solution in the relativistic three-body problem for general mass... [Phys. Rev. D 91, 124016] Published Wed Jun 03, 2015

Keywords: General Relativity and Gravitation

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83

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Three-step approach for computing band offsets and its application to inorganic ABX_{3} halide perovskites (2015)

Li Lang, Yue-Yu Zhang, Peng Xu, Shiyou Chen, H. J. Xiang, and X. G. Gong

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): Li Lang, Yue-Yu Zhang, Peng Xu, Shiyou Chen, H. J. Xiang, and X. G. Gong Band offsets between different semiconductors are important parameters that determine the electronic transport properties near the interface in the heterostructure devices. The computation of the natural band offset is a well-known challenge. In this paper, we propose a new method, which is called t… [Phys. Rev. B 92, 075102] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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84

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Patterns of electromagnetic response in topological semimetals (2015)

Srinidhi T. Ramamurthy and Taylor L. Hughes

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-04

Description: Author(s): Srinidhi T. Ramamurthy and Taylor L. Hughes Topological semimetals are gapless states of matter which have robust and unique electromagnetic responses and surface states. In this paper, we consider semimetals which have pointlike Fermi surfaces in various spatial dimensions D = 1 , 2 , 3 which naturally occur in the transition between a weak topolo… [Phys. Rev. B 92, 085105] Published Mon Aug 03, 2015

Keywords: Electronic structure and strongly correlated systems

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85

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Note on linearized stability of Schwarzschild thin-shell wormholes with variable equations of state (2015)

Victor Varela

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-04

Description: Author(s): Victor Varela We discuss how the assumption of variable equation of state (EoS) allows the elimination of the instability at equilibrium throat radius a 0 = 3 M featured by previous Schwarzschild thin-shell wormhole models. Unobstructed stability regions are found for three choices of variable EoS. Two of these EoS e… [Phys. Rev. D 92, 044002] Published Mon Aug 03, 2015

Keywords: General Relativity and Gravitation

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86

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f(R)-modified gravity, Wald entropy, and the generalized uncertainty principle (2015)

Fayçal Hammad

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-04

Description: Author(s): Fayçal Hammad Wald’s entropy formula allows one to find the entropy of black holes’ event horizon within any diffeomorphism invariant theory of gravity. When applied to general relativity, the formula yields the Bekenstein-Hawking result but, for any other gravitational action that departs from the Hilbert action… [Phys. Rev. D 92, 044004] Published Mon Aug 03, 2015

Keywords: General Relativity and Gravitation

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87

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Plane wave holonomies in quantum gravity. I. A model (2015)

Donald E. Neville

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-04

Description: Author(s): Donald E. Neville This is the first of two papers which study the behavior of the SU(2) holonomies of canonical quantum gravity, when they are acted upon by a unidirectional, plane gravity wave. The present paper constructs a model based on holonomies and fluxes having support on a lattice (LHF denotes lattice-holono… [Phys. Rev. D 92, 044005] Published Mon Aug 03, 2015

Keywords: General Relativity and Gravitation

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88

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Nonlocality in uniaxially polarizable media (2015)

Maxim A. Gorlach and Pavel A. Belov

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-06

Description: Author(s): Maxim A. Gorlach and Pavel A. Belov We reveal extraordinary electromagnetic properties for a general class of uniaxially polarizable media. Depending on parameters, such metamaterials may have a wide range of nontrivial shapes of isofrequency contours including lemniscate, diamond, and multiply connected curves with connectivity numbe… [Phys. Rev. B 92, 085107] Published Tue Aug 04, 2015

Keywords: Electronic structure and strongly correlated systems

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89

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Inflation from cosmological constant and nonminimally coupled scalar (2015)

Dražen Glavan, Anja Marunović, and Tomislav Prokopec

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-06

Description: Author(s): Dražen Glavan, Anja Marunović, and Tomislav Prokopec We consider inflation in a universe with a positive cosmological constant and a nonminimally coupled scalar field, in which the field couples both quadratically and quartically to the Ricci scalar. When considered in the Einstein frame and when the nonminimal couplings are negative, the field starts… [Phys. Rev. D 92, 044008] Published Tue Aug 04, 2015

Keywords: General Relativity and Gravitation

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90

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Enhanced conduction and ferromagnetic order at (100)-type twin walls in La_{0.7} Sr_{0.3} MnO_{3} thin films (2015)

Lluís Balcells, Markos Paradinas, Núria Baguès, Neus Domingo, Roberto Moreno, Regina Galceran, Michael Walls, José Santiso, Zorica Konstantinovic, Alberto Pomar, Marie-Jo Casanove, Carmen Ocal, Benjamín Martínez, and Felip Sandiumenge

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): Lluís Balcells, Markos Paradinas, Núria Baguès, Neus Domingo, Roberto Moreno, Regina Galceran, Michael Walls, José Santiso, Zorica Konstantinovic, Alberto Pomar, Marie-Jo Casanove, Carmen Ocal, Benjamín Martínez, and Felip Sandiumenge There is increasing evidence supporting the strong potential of twin walls in ferroic materials as distinct, spatially tunable, functional elements in future electronic devices. Here, we report an increase of about one order of magnitude in conductivity and more robust magnetic interactions at (100)… [Phys. Rev. B 92, 075111] Published Fri Aug 07, 2015

Keywords: Electronic structure and strongly correlated systems

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91

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Beyond the GW approximation: A second-order screened exchange correction (2015)

Xinguo Ren, Noa Marom, Fabio Caruso, Matthias Scheffler, and Patrick Rinke

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): Xinguo Ren, Noa Marom, Fabio Caruso, Matthias Scheffler, and Patrick Rinke Motivated by the recently developed renormalized second-order perturbation theory for ground-state energy calculations, we propose a second-order screened exchange correction (SOSEX) to the G W self-energy. This correction follows the spirit of the SOSEX correction to the random-phase approximation f… [Phys. Rev. B 92, 081104(R)] Published Fri Aug 07, 2015

Keywords: Electronic structure and strongly correlated systems

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92

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Topological magnetoelectric effects in thin films of topological insulators (2015)

Takahiro Morimoto, Akira Furusaki, and Naoto Nagaosa

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): Takahiro Morimoto, Akira Furusaki, and Naoto Nagaosa The authors describe two theoretical setups that could be used to demonstrate the yet unobserved topological magnetoelectric effect. The first proposal employs the zero-filling quantum Hall effect in thin films under magnetic field. The second setup involves topological insulator thin films doped with two magnetic ions such as Cr and Mn. [Phys. Rev. B 92, 085113] Published Fri Aug 07, 2015

Keywords: Electronic structure and strongly correlated systems

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93

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Correlation effects on topological crystalline insulators (2015)

Tsuneya Yoshida and Akira Furusaki

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): Tsuneya Yoshida and Akira Furusaki We study interaction effects on the topological crystalline insulators protected by time-reversal ( T ) and reflection symmetry ( R ) in two and three spatial dimensions. From the stability analysis of the edge states with bosonization, we find that the classification of the two-dimensional symmetry-pro… [Phys. Rev. B 92, 085114] Published Fri Aug 07, 2015

Keywords: Electronic structure and strongly correlated systems

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94

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Entanglement negativity after a local quantum quench in conformal field theories (2015)

Xueda Wen, Po-Yao Chang, and Shinsei Ryu

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): Xueda Wen, Po-Yao Chang, and Shinsei Ryu We study the time evolution of the entanglement negativity after a local quantum quench in (1 + 1)-dimensional conformal field theories (CFTs), which we introduce by suddenly joining two initially decoupled CFTs at their end points. We calculate the negativity evolution for both adjacent intervals a… [Phys. Rev. B 92, 075109] Published Thu Aug 06, 2015

Keywords: Electronic structure and strongly correlated systems

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95

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Determination of the Mott-Hubbard gap in GdTiO_{3} (2015)

L. Bjaalie, A. Verma, B. Himmetoglu, A. Janotti, S. Raghavan, V. Protasenko, E. H. Steenbergen, D. Jena, S. Stemmer, and C. G. Van de Walle

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-08

Description: Author(s): L. Bjaalie, A. Verma, B. Himmetoglu, A. Janotti, S. Raghavan, V. Protasenko, E. H. Steenbergen, D. Jena, S. Stemmer, and C. G. Van de Walle The band gaps of rare-earth titanates are commonly reported to be 0.2–0.7 eV. These values are based on optical reflectivity measurements, from which the onset of optical absorption is derived. Here we report experimental and theoretical results on GdTiO 3 (GTO) indicating that the gap is significant… [Phys. Rev. B 92, 085111] Published Thu Aug 06, 2015

Keywords: Electronic structure and strongly correlated systems

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96

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First-principles study of magnetic properties in Fe-ladder compound BaFe_{2} S_{3} (2015)

Michi-To Suzuki, Ryotaro Arita, and Hiroaki Ikeda

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): Michi-To Suzuki, Ryotaro Arita, and Hiroaki Ikeda We study the magnetic, structural, and electronic properties of the recently discovered iron-based superconductor BaFe 2 S 3 based on density functional theory with the generalized gradient approximation. The calculations show that the magnetic alignment in which the spins are coupled ferromagnetically… [Phys. Rev. B 92, 085116] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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97

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X-ray absorption K edge as a diagnostic of the electronic temperature in warm dense aluminum (2015)

F. Dorchies, F. Festa, V. Recoules, O. Peyrusse, A. Benuzzi-Mounaix, E. Brambrink, A. Levy, A. Ravasio, M. Koenig, T. Hall, and S. Mazevet

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-11

Description: Author(s): F. Dorchies, F. Festa, V. Recoules, O. Peyrusse, A. Benuzzi-Mounaix, E. Brambrink, A. Levy, A. Ravasio, M. Koenig, T. Hall, and S. Mazevet The use of the x-ray absorption K -edge slope is investigated as a model-free diagnostic of the electronic temperature in warm dense matter. Data are reported for aluminum in a wide domain of densities (approximately one to three times the solid density) and temperatures ( ∼ 0.1 – 10 eV ). Measurements are… [Phys. Rev. B 92, 085117] Published Mon Aug 10, 2015

Keywords: Electronic structure and strongly correlated systems

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98

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Finite-temperature Gutzwiller approximation from the time-dependent variational principle (2015)

Nicola Lanatà, Xiaoyu Deng, and Gabriel Kotliar

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-12

Description: Author(s): Nicola Lanatà, Xiaoyu Deng, and Gabriel Kotliar We develop an extension of the Gutzwiller approximation to finite temperatures based on the Dirac-Frenkel variational principle. Our method does not rely on any entropy inequality, and is substantially more accurate than the approaches proposed in previous works. We apply our theory to the single-ba… [Phys. Rev. B 92, 081108(R)] Published Tue Aug 11, 2015

Keywords: Electronic structure and strongly correlated systems

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99

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Mass and thermodynamic volume in Lifshitz spacetimes (2015)

W. G. Brenna, Robert B. Mann, and Miok Park

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2015-08-12

Description: Author(s): W. G. Brenna, Robert B. Mann, and Miok Park We examine the concept of black hole thermodynamic volume and its consistency with thermodynamic mass in spacetimes that are not asymptotically flat but instead have anisotropic Lifshitz scaling symmetry. We find that the generalized Smarr relation in anti–de Sitter space—extended to include a press… [Phys. Rev. D 92, 044015] Published Tue Aug 11, 2015

Keywords: General Relativity and Gravitation

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100

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Strong competition between Θ_{II} -loop-current order and d-wave charge order along the diagonal direction in a two-dimensional hot spot model (2015)

Vanuildo S. de Carvalho, Thomas Kloss, Xavier Montiel, Hermann Freire, and Catherine Pépin

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-08-15

Description: Author(s): Vanuildo S. de Carvalho, Thomas Kloss, Xavier Montiel, Hermann Freire, and Catherine Pépin We study the fate of the so-called Θ I I -loop-current order that breaks both time-reversal and parity symmetries in a two-dimensional hot spot model with antiferromagnetically mediated interactions, using Fermi surfaces relevant to the phenomenology of the cuprate superconductors. We start from a thre… [Phys. Rev. B 92, 075123] Published Fri Aug 14, 2015

Keywords: Electronic structure and strongly correlated systems

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