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HIGHLIGHTED ARTICLES

Structural evolution and electronic properties of (Sr1−xCax)2−yIrO4+z spin-orbit-assisted insulators

Xiang Chen and Stephen D. Wilson

Phys. Rev. B 94, 195115 (2016) - Published 8 November, 2016

Due to their unique balance of energy scales, correlated iridates have proven a fruitful materials platform for both the prediction and discovery of numerous novel electronic phases and ground states. The comparable strengths of spin-orbit coupling, on-site Coulomb interactions, and local crystal-field splitting inherent to the iridium cations hosted within various lattice geometries has led to the realization of a novel form of spin-orbit assisted Mott insulating ground state, where the iridium’s spin and orbital angular momenta become entangled into a Jeff=1/2 wave function. In this paper, the stability of this state with respect to chemical pressure is explored in the prototypical spin-orbit assisted Mott insulator Sr2IrO4. This study reveals that isovalent substitution of smaller Ca2+ onto Sr2+ sites in this system drives the lattice to evolve through three distinct structural phases with increasing Ca2+ content: evolving from the parent quasi-two-dimensional n=1 Ruddlesden-Popper structure, to a novel three dimensional corner sharing IrO6 octahedral network to a quasi-one dimensional IrO6 edge-sharing chain structure. All three phases remain insulators reliant on the inherently strong spin-orbit coupling of Ir. However, their magnetic properties evolve dramatically across the phase diagram. The work here provides a global view of the evolution of the structural and electronic properties of Sr2IrO4 as its lattice is destabilized via chemical pressure.

Negativity spectrum of one-dimensional conformal field theories

Paola Ruggiero, Vincenzo Alba, and Pasquale Calabrese

Phys. Rev. B 94, 195121 (2016) - Published 10 November, 2016

Logarithmic negativity is a proper measure of quantum entanglement in mixed states. Originally proposed in the context of quantum information, in recent years it is attracting interest in quantum field theory, condensed matter physics, and statistical physics. The key object to construct the negativity is the partial transpose of the reduced density matrix. Here, focusing on two adjacent intervals, the authors provide a complete study of the distribution of the eigenvalues of the partial transpose (negativity spectrum) for gapless one-dimensional systems described by a conformal field theory (CFT). Similar to the entanglement spectrum, the distribution of the negativity spectrum is universal, and it depends only on the central charge of the underlying CFT. The precise form of the spectrum depends on whether the two intervals are in a pure or mixed state, and in both cases, a dependence on the sign of the eigenvalues is found. This dependence is weak for bulk eigenvalues, whereas it is strong at the spectrum edges. The authors also investigate the scaling of the smallest (negative) and largest (positive) eigenvalues of the partial transpose. The analytical results are thoroughly checked against numerical DMRG simulations as well as in exactly solvable models.

Fermi surface evolution of Na-doped PbTe studied through density functional theory calculations and Shubnikov–de Haas measurements

P. Giraldo-Gallo, B. Sangiorgio, P. Walmsley, H. J. Silverstein, M. Fechner, S. C. Riggs, T. H. Geballe, N. A. Spaldin, and I. R. Fisher

Phys. Rev. B 94, 195141 (2016) - Published 23 November, 2016

Lead telluride (PbTe) is a widely known thermoelectric material and a narrow-gap semiconductor. The introduction of impurity dopants in this compound has shown to significantly increase the thermoelectric figure of merit, and for certain dopants, to even lead the material to a superconducting ground state. Understanding the physical origin of these enhanced properties and their dependence on the choice of dopant chemistry requires a detailed knowledge of the electronic structure, in particular its evolution with carrier concentrations. With this in mind, the authors of this paper present a combined experimental and first-principles study of the evolution of the low-temperature Fermi surface of Na-doped PbTe. Their Shubnikov–de Haas measurements allowed the determination of the full morphology of the Fermi surface for hole concentrations one order of magnitude higher than other previous studies in this material, showing that the band dispersion is consistent with a nonparabolic single-band Kane-model dispersion, in which the hole-pockets are ellipsoids of fixed anisotropy throughout the band, but the effective masses depend strongly on Fermi energy. Additionally, the authors show that standard density functional calculations underestimate the energy difference between the first two valence-band maxima, since their experimental data is consistent with a single-band Fermi surface over the entire doping range studied.

The “parity” anomaly on an unorientable manifold

Edward Witten

Phys. Rev. B 94, 195150 (2016) - Published 28 November, 2016

The “parity” anomaly is a potential violation of time-reversal and reflection symmetry that can occur for relativistic fermions coupled to gauge fields and/or gravity in 2+1 dimensional spacetime. It has played a role in condensed matter physics since the work of Haldane and others in the 1980’s. Only recently, as a result of developments in the theory of topological superconductors, has it been understood that the extension of this anomaly to an unorientable spacetime is significant. In the present paper, a systematic description is given of the “parity” anomaly on an unorientable spacetime. This is used to get a fuller understanding of gapped symmetry-preserving boundary states of a topological superconductor and to resolve some questions about the world-volume path integral of M-theory membranes.

Magnetic structures and excitations in a multiferroic Y-type hexaferrite BaSrCo2Fe11AlO22

Taro Nakajima, Yusuke Tokunaga, Masaaki Matsuda, Sachith Dissanayake, Jaime Fernandez-Baca, Kazuhisa Kakurai, Yasujiro Taguchi, Yoshinori Tokura, and Taka-hisa Arima

Phys. Rev. B 94, 195154 (2016) - Published 30 November, 2016

Multiferroic hexaferrites have been extensively investigated because they exhibit ferroelectricity associated with noncollinear magnetic orders in relatively low magnetic field and high temperature regions. To understand the static and dynamical spin-polarization coupling in such systems, it is necessary to determine the magnetic structures and spin-wave modes. This is impossible for polycrystalline samples. Here, the authors have successfully grown single crystals of BaSrCo2Fe12AlO22 by means of a laser floating zone technique. They perform magnetization, electric polarization, and neutron diffraction measurements to establish the magnetic phase diagram. Several interesting features are seen and the new understanding should provide a useful guide for developing multiferroic-based functional devices working at room temperature.

Classical origin of conductance oscillations in an integrable cavity

Christina Pöltl, Aleksey Kozikov, Klaus Ensslin, Thomas Ihn, Rodolfo A. Jalabert, Christian Reichl, Werner Wegscheider, and Dietmar Weinmann

Phys. Rev. B 94, 195304 (2016) - Published 7 November, 2016

Quantum transport of electrons through ultraclean two-dimensional cavities depends sensitively on the geometry. In scanning gate microscopy, the charged tip is a valuable tool to tune the shape of a cavity while measuring its conductance, and thus to address questions of quantum chaos, such as the relevance of the underlying classical electron dynamics. For the tip placed in the center of an integrable cavity of circular shape, a remarkable nonmonotonic variation of the conductance is measured as a function of the voltage applied to the tip. Numerical simulations yield conductance oscillations with tip strength that agree well with the experimental findings. A semiclassical analysis of the conductance, based on the classical trajectories transmitted through the cavity, reproduces the conductance oscillations, proving that the effect is of classical origin. Remarkably, only particular classes of short trajectories are responsible for the effect within this semiclassical analysis. When the strength of the tip-induced potential is increased, the character of the dominant trajectories alternates between transmitted and reflected ones, thereby providing an unusually simple explanation for the observed phenomenon.

ARTICLES

Electronic structure and strongly correlated systems

Europium mixed-valence, long-range magnetic order, and dynamic magnetic response in EuCu2(SixGe1−x)2

K. S. Nemkovski, D. P. Kozlenko, P. A. Alekseev, J.-M. Mignot, A. P. Menushenkov, A. A. Yaroslavtsev, E. S. Clementyev, A. S. Ivanov, S. Rols, B. Klobes, R. P. Hermann, and A. V. Gribanov

Phys. Rev. B 94, 195101 (2016) - Published 1 November, 2016

Observation of semilocalized dispersive states in the strongly correlated electron-doped ferromagnet Eu1−xGdxO

D. E. Shai, M. H. Fischer, A. J. Melville, E. J. Monkman, J. W. Harter, D. W. Shen, D. G. Schlom, M. J. Lawler, E.-A. Kim, and K. M. Shen

Phys. Rev. B 94, 195102 (2016) - Published 1 November, 2016

Interaction-induced metallic state in graphene on hexagonal boron nitride

Jin-Rong Xu, Ze-Yi Song, Chen-Guang Yuan, and Yu-Zhong Zhang

Phys. Rev. B 94, 195103 (2016) - Published 1 November, 2016

Topological node-line semimetal in compressed black phosphorus

Jianzhou Zhao, Rui Yu, Hongming Weng, and Zhong Fang

Phys. Rev. B 94, 195104 (2016) - Published 2 November, 2016

Discovering phase transitions with unsupervised learning

Lei Wang

Phys. Rev. B 94, 195105 (2016) - Published 2 November, 2016

High-temperature expansion method for calculating paramagnetic exchange interactions

O. M. Sotnikov and V. V. Mazurenko

Phys. Rev. B 94, 195107 (2016) - Published 2 November, 2016

Floquet spectrum and driven conductance in Dirac materials: Effects of Landau-Zener-Stückelberg-Majorana interferometry

Ya. I. Rodionov, K. I. Kugel, and Franco Nori

Phys. Rev. B 94, 195108 (2016) - Published 3 November, 2016

Nonsymmorphic symmetry-required band crossings in topological semimetals

Y. X. Zhao and Andreas P. Schnyder

Phys. Rev. B 94, 195109 (2016) - Published 3 November, 2016

Entanglement and corner Hamiltonian spectra of integrable open spin chains

Panjin Kim, Hosho Katsura, Nandini Trivedi, and Jung Hoon Han

Phys. Rev. B 94, 195110 (2016) - Published 7 November, 2016

Emergent lattices with geometrical frustration in doped extended Hubbard models

Ryui Kaneko, Luca F. Tocchio, Roser Valentí, and Claudius Gros

Phys. Rev. B 94, 195111 (2016) - Published 7 November, 2016

Decorated defect condensate: A window to unconventional quantum phases in Weyl semimetals

Yizhi You

Phys. Rev. B 94, 195112 (2016) - Published 7 November, 2016

Finite-temperature scaling close to Ising-nematic quantum critical points in two-dimensional metals

Matthias Punk

Phys. Rev. B 94, 195113 (2016) - Published 7 November, 2016

Interplay of Coulomb interaction and disorder in a two-dimensional semi-Dirac fermion system

Peng-Lu Zhao, Jing-Rong Wang, An-Min Wang, and Guo-Zhu Liu

Phys. Rev. B 94, 195114 (2016) - Published 8 November, 2016

Structural evolution and electronic properties of (Sr1−xCax)2−yIrO4+z spin-orbit-assisted insulators

Xiang Chen and Stephen D. Wilson

Phys. Rev. B 94, 195115 (2016) - Published 8 November, 2016

Due to their unique balance of energy scales, correlated iridates have proven a fruitful materials platform for both the prediction and discovery of numerous novel electronic phases and ground states. The comparable strengths of spin-orbit coupling, on-site Coulomb interactions, and local crystal-field splitting inherent to the iridium cations hosted within various lattice geometries has led to the realization of a novel form of spin-orbit assisted Mott insulating ground state, where the iridium’s spin and orbital angular momenta become entangled into a Jeff=1/2 wave function. In this paper, the stability of this state with respect to chemical pressure is explored in the prototypical spin-orbit assisted Mott insulator Sr2IrO4. This study reveals that isovalent substitution of smaller Ca2+ onto Sr2+ sites in this system drives the lattice to evolve through three distinct structural phases with increasing Ca2+ content: evolving from the parent quasi-two-dimensional n=1 Ruddlesden-Popper structure, to a novel three dimensional corner sharing IrO6 octahedral network to a quasi-one dimensional IrO6 edge-sharing chain structure. All three phases remain insulators reliant on the inherently strong spin-orbit coupling of Ir. However, their magnetic properties evolve dramatically across the phase diagram. The work here provides a global view of the evolution of the structural and electronic properties of Sr2IrO4 as its lattice is destabilized via chemical pressure.

Magnetoelectric coupling in the type-I multiferroic ScFeO3

G. Giovannetti, D. Puggioni, P. Barone, S. Picozzi, J. M. Rondinelli, and M. Capone

Phys. Rev. B 94, 195116 (2016) - Published 9 November, 2016

Thermoelectric power as a probe of density of states in correlated actinide materials: The case of PuCoGa5 superconductor

K. Gofryk, J.-C. Griveau, P. S. Riseborough, and T. Durakiewicz

Phys. Rev. B 94, 195117 (2016) - Published 9 November, 2016

Infrared study of the magnetostructural phase transition in correlated CrN

J. Ebad-Allah, B. Kugelmann, F. Rivadulla, and C. A. Kuntscher

Phys. Rev. B 94, 195118 (2016) - Published 9 November, 2016

Bosonic self-energy functional theory

Dario Hügel, Philipp Werner, Lode Pollet, and Hugo U. R. Strand

Phys. Rev. B 94, 195119 (2016) - Published 9 November, 2016

Symmetry fractionalization and anomaly detection in three-dimensional topological phases

Xie Chen and Michael Hermele

Phys. Rev. B 94, 195120 (2016) - Published 9 November, 2016

Negativity spectrum of one-dimensional conformal field theories

Paola Ruggiero, Vincenzo Alba, and Pasquale Calabrese

Phys. Rev. B 94, 195121 (2016) - Published 10 November, 2016

Logarithmic negativity is a proper measure of quantum entanglement in mixed states. Originally proposed in the context of quantum information, in recent years it is attracting interest in quantum field theory, condensed matter physics, and statistical physics. The key object to construct the negativity is the partial transpose of the reduced density matrix. Here, focusing on two adjacent intervals, the authors provide a complete study of the distribution of the eigenvalues of the partial transpose (negativity spectrum) for gapless one-dimensional systems described by a conformal field theory (CFT). Similar to the entanglement spectrum, the distribution of the negativity spectrum is universal, and it depends only on the central charge of the underlying CFT. The precise form of the spectrum depends on whether the two intervals are in a pure or mixed state, and in both cases, a dependence on the sign of the eigenvalues is found. This dependence is weak for bulk eigenvalues, whereas it is strong at the spectrum edges. The authors also investigate the scaling of the smallest (negative) and largest (positive) eigenvalues of the partial transpose. The analytical results are thoroughly checked against numerical DMRG simulations as well as in exactly solvable models.

Electron–soft phonon scattering in n-type SrTiO3

W. X. Zhou, J. Zhou, C. J. Li, S. W. Zeng, Z. Huang, H. J. Harsan Ma, K. Han, Z. S. Lim, D. Y. Wan, L. C. Zhang, T. Venkatesan, Y. P. Feng, and Ariando

Phys. Rev. B 94, 195122 (2016) - Published 10 November, 2016

Magnetic susceptibility of topological nodal semimetals

G. P. Mikitik and Yu. V. Sharlai

Phys. Rev. B 94, 195123 (2016) - Published 14 November, 2016

Nonadiabatic bulk-surface oscillations in driven topological insulators

Michael Kolodrubetz, Benjamin M. Fregoso, and Joel E. Moore

Phys. Rev. B 94, 195124 (2016) - Published 14 November, 2016

Electronic correlations versus lattice interactions: Interplay of charge and anion orders in (TMTTF)2X

A. Pustogow, T. Peterseim, S. Kolatschek, L. Engel, and M. Dressel

Phys. Rev. B 94, 195125 (2016) - Published 14 November, 2016

Hidden Mott transition and large-U superconductivity in the two-dimensional Hubbard model

Luca F. Tocchio, Federico Becca, and Sandro Sorella

Phys. Rev. B 94, 195126 (2016) - Published 14 November, 2016

Bond disproportionation and dynamical charge fluctuations in the perovskite rare-earth nickelates

R. J. Green, M. W. Haverkort, and G. A. Sawatzky

Phys. Rev. B 94, 195127 (2016) - Published 15 November, 2016

Spontaneous structural distortion of the metallic Shastry-Sutherland system DyB4 by quadrupole-spin-lattice coupling

Hasung Sim, Seongsu Lee, Kun-Pyo Hong, Jaehong Jeong, J. R. Zhang, T. Kamiyama, D. T. Adroja, C. A. Murray, S. P. Thompson, F. Iga, S. Ji, D. Khomskii, and Je-Geun Park

Phys. Rev. B 94, 195128 (2016) - Published 15 November, 2016

Dimensionless ratios: Characteristics of quantum liquids and their phase transitions

Yi-Cong Yu, Yang-Yang Chen, Hai-Qing Lin, Rudolf A. Römer, and Xi-Wen Guan

Phys. Rev. B 94, 195129 (2016) - Published 15 November, 2016

Two-dimensional spin liquids with Z2 topological order in an array of quantum wires

Aavishkar A. Patel and Debanjan Chowdhury

Phys. Rev. B 94, 195130 (2016) - Published 16 November, 2016

Hybridization and electron-phonon coupling in ferroelectric BaTiO3 probed by resonant inelastic x-ray scattering

S. Fatale, S. Moser, J. Miyawaki, Y. Harada, and M. Grioni

Phys. Rev. B 94, 195131 (2016) - Published 16 November, 2016

Evolution of localized states in Lieb lattices under time-dependent magnetic fields

J. D. Gouveia, I. A. Maceira, and R. G. Dias

Phys. Rev. B 94, 195132 (2016) - Published 16 November, 2016

Nonperturbative linked-cluster expansions in long-range ordered quantum systems

Dominik Ixert and Kai Phillip Schmidt

Phys. Rev. B 94, 195133 (2016) - Published 16 November, 2016

Spin texture in type-II Weyl semimetal WTe2

Baojie Feng, Yang-Hao Chan, Ya Feng, Ro-Ya Liu, Mei-Yin Chou, Kenta Kuroda, Koichiro Yaji, Ayumi Harasawa, Paolo Moras, Alexei Barinov, Walid Malaeb, Cédric Bareille, Takeshi Kondo, Shik Shin, Fumio Komori, Tai-Chang Chiang, Youguo Shi, and Iwao Matsuda

Phys. Rev. B 94, 195134 (2016) - Published 18 November, 2016

Anisotropic non-Fermi liquids

Shouvik Sur and Sung-Sik Lee

Phys. Rev. B 94, 195135 (2016) - Published 18 November, 2016

Unravelling quantum dot array simulators via singlet-triplet measurements

Johnnie Gray, Abolfazl Bayat, Reuben K. Puddy, Charles G. Smith, and Sougato Bose

Phys. Rev. B 94, 195136 (2016) - Published 18 November, 2016

Tailored optical polarization in nanostructured metamaterials

Bernardo S. Mendoza and W. Luis Mochán

Phys. Rev. B 94, 195137 (2016) - Published 21 November, 2016

Optical decoherence and spectral diffusion in an erbium-doped silica glass fiber featuring long-lived spin sublevels

Lucile Veissier, Mohsen Falamarzi, Thomas Lutz, Erhan Saglamyurek, Charles W. Thiel, Rufus L. Cone, and Wolfgang Tittel

Phys. Rev. B 94, 195138 (2016) - Published 21 November, 2016

Impurity states in the magnetic topological insulator V:(Bi,Sb)2Te3

Thiago R. F. Peixoto, Hendrik Bentmann, Steffen Schreyeck, Martin Winnerlein, Christoph Seibel, Henriette Maaß, Mohammed Al-Baidhani, Katharina Treiber, Sonja Schatz, Stefan Grauer, Charles Gould, Karl Brunner, Arthur Ernst, Laurens W. Molenkamp, and Friedrich Reinert

Phys. Rev. B 94, 195140 (2016) - Published 22 November, 2016

Fermi surface evolution of Na-doped PbTe studied through density functional theory calculations and Shubnikov–de Haas measurements

P. Giraldo-Gallo, B. Sangiorgio, P. Walmsley, H. J. Silverstein, M. Fechner, S. C. Riggs, T. H. Geballe, N. A. Spaldin, and I. R. Fisher

Phys. Rev. B 94, 195141 (2016) - Published 23 November, 2016

Lead telluride (PbTe) is a widely known thermoelectric material and a narrow-gap semiconductor. The introduction of impurity dopants in this compound has shown to significantly increase the thermoelectric figure of merit, and for certain dopants, to even lead the material to a superconducting ground state. Understanding the physical origin of these enhanced properties and their dependence on the choice of dopant chemistry requires a detailed knowledge of the electronic structure, in particular its evolution with carrier concentrations. With this in mind, the authors of this paper present a combined experimental and first-principles study of the evolution of the low-temperature Fermi surface of Na-doped PbTe. Their Shubnikov–de Haas measurements allowed the determination of the full morphology of the Fermi surface for hole concentrations one order of magnitude higher than other previous studies in this material, showing that the band dispersion is consistent with a nonparabolic single-band Kane-model dispersion, in which the hole-pockets are ellipsoids of fixed anisotropy throughout the band, but the effective masses depend strongly on Fermi energy. Additionally, the authors show that standard density functional calculations underestimate the energy difference between the first two valence-band maxima, since their experimental data is consistent with a single-band Fermi surface over the entire doping range studied.

Optical properties of AFe2As2 (A=Ca, Sr, and Ba) single crystals

Y. M. Dai, Ana Akrap, S. L. Bud'ko, P. C. Canfield, and C. C. Homes

Phys. Rev. B 94, 195142 (2016) - Published 23 November, 2016

How local is the information in tensor networks of matrix product states or projected entangled pairs states

Anurag Anshu, Itai Arad, and Aditya Jain

Phys. Rev. B 94, 195143 (2016) - Published 28 November, 2016

Weyl fermions with arbitrary monopoles in magnetic fields: Landau levels, longitudinal magnetotransport, and density-wave ordering

Xiao Li, Bitan Roy, and S. Das Sarma

Phys. Rev. B 94, 195144 (2016) - Published 28 November, 2016

Electron and hole doping in the relativistic Mott insulator Sr2IrO4: A first-principles study using band unfolding technique

Peitao Liu, Michele Reticcioli, Bongjae Kim, Alessandra Continenza, Georg Kresse, D. D. Sarma, Xing-Qiu Chen, and Cesare Franchini

Phys. Rev. B 94, 195145 (2016) - Published 28 November, 2016

Forces for structural optimizations in correlated materials within a DFT+embedded DMFT functional approach

Kristjan Haule and Gheorghe L. Pascut

Phys. Rev. B 94, 195146 (2016) - Published 28 November, 2016

Nonrigid band shift and nonmonotonic electronic structure changes upon doping in the normal state of the pnictide high-temperature superconductor Ba(Fe1−xCox)2As2

Paolo Vilmercati, Sung-Kwan Mo, Alexei Fedorov, Michael A. McGuire, Athena Sefat, Brian Sales, David Mandrus, David J. Singh, Wei Ku, Steve Johnston, and Norman Mannella

Phys. Rev. B 94, 195147 (2016) - Published 28 November, 2016

Interaction-induced local moments in parallel quantum dots within the functional renormalization group approach

V. S. Protsenko and A. A. Katanin

Phys. Rev. B 94, 195148 (2016) - Published 28 November, 2016

Field-induced suppression of charge density wave in GdNiC2

Kamil K. Kolincio, Karolina Górnicka, Michał J. Winiarski, Judyta Strychalska-Nowak, and Tomasz Klimczuk

Phys. Rev. B 94, 195149 (2016) - Published 28 November, 2016

The “parity” anomaly on an unorientable manifold

Edward Witten

Phys. Rev. B 94, 195150 (2016) - Published 28 November, 2016

The “parity” anomaly is a potential violation of time-reversal and reflection symmetry that can occur for relativistic fermions coupled to gauge fields and/or gravity in 2+1 dimensional spacetime. It has played a role in condensed matter physics since the work of Haldane and others in the 1980’s. Only recently, as a result of developments in the theory of topological superconductors, has it been understood that the extension of this anomaly to an unorientable spacetime is significant. In the present paper, a systematic description is given of the “parity” anomaly on an unorientable spacetime. This is used to get a fuller understanding of gapped symmetry-preserving boundary states of a topological superconductor and to resolve some questions about the world-volume path integral of M-theory membranes.

Renormalized parameters and perturbation theory in dynamical mean-field theory for the Hubbard model

A. C. Hewson

Phys. Rev. B 94, 195152 (2016) - Published 28 November, 2016

Seebeck coefficient in correlated low-dimensional organic metals

M. Shahbazi and C. Bourbonnais

Phys. Rev. B 94, 195153 (2016) - Published 29 November, 2016

Magnetic structures and excitations in a multiferroic Y-type hexaferrite BaSrCo2Fe11AlO22

Taro Nakajima, Yusuke Tokunaga, Masaaki Matsuda, Sachith Dissanayake, Jaime Fernandez-Baca, Kazuhisa Kakurai, Yasujiro Taguchi, Yoshinori Tokura, and Taka-hisa Arima

Phys. Rev. B 94, 195154 (2016) - Published 30 November, 2016

Multiferroic hexaferrites have been extensively investigated because they exhibit ferroelectricity associated with noncollinear magnetic orders in relatively low magnetic field and high temperature regions. To understand the static and dynamical spin-polarization coupling in such systems, it is necessary to determine the magnetic structures and spin-wave modes. This is impossible for polycrystalline samples. Here, the authors have successfully grown single crystals of BaSrCo2Fe12AlO22 by means of a laser floating zone technique. They perform magnetization, electric polarization, and neutron diffraction measurements to establish the magnetic phase diagram. Several interesting features are seen and the new understanding should provide a useful guide for developing multiferroic-based functional devices working at room temperature.

Electronic structure and magnetism of strained bcc phases across the fcc to bcc transition in ultrathin Fe films

Alberto Calloni, Giulia Berti, Gianlorenzo Bussetti, Guido Fratesi, Marco Finazzi, Franco Ciccacci, and Lamberto Duò

Phys. Rev. B 94, 195155 (2016) - Published 30 November, 2016

Optical probe of Heisenberg-Kitaev magnetism in α−RuCl3

Luke J. Sandilands, C. H. Sohn, H. J. Park, So Yeun Kim, K. W. Kim, Jennifer A. Sears, Young-June Kim, and Tae Won Noh

Phys. Rev. B 94, 195156 (2016) - Published 30 November, 2016

Semiconductors I: bulk

Nonlinear optical coefficients of wurtzite-type α-GaN determined by Raman spectroscopy

Gert Irmer, Christian Röder, Cameliu Himcinschi, and Jens Kortus

Phys. Rev. B 94, 195201 (2016) - Published 3 November, 2016

Activated hopping transport in anisotropic systems at low temperatures

S. Ihnatsenka

Phys. Rev. B 94, 195202 (2016) - Published 4 November, 2016

Doping of Ga2O3 with transition metals

H. Peelaers and C. G. Van de Walle

Phys. Rev. B 94, 195203 (2016) - Published 10 November, 2016

Vacancy defect complexes in silicon: Charges and spin order

Yu Liu, Ruiqun Pan, Xinghong Zhang, Jiecai Han, Quan Yuan, Ying Tian, Ye Yuan, Fang Liu, Yutian Wang, Alpha T. N'Diaye, Elke Arenholz, Xiaolong Chen, Young Sun, Bo Song, and Shengqiang Zhou

Phys. Rev. B 94, 195204 (2016) - Published 14 November, 2016

Pseudospin-32 fermions, type-II Weyl semimetals, and critical Weyl semimetals in tricolor cubic lattices

Motohiko Ezawa

Phys. Rev. B 94, 195205 (2016) - Published 16 November, 2016

Effect of spin-orbit coupling on formation of native defects in Weyl fermion semimetals: The case of TX (T=Ta,Nb; X=As,P)

Zhi Gen Yu and Yong-Wei Zhang

Phys. Rev. B 94, 195206 (2016) - Published 17 November, 2016

Terahertz radiation from accelerating charge carriers in graphene under ultrafast photoexcitation

Avinash Rustagi and C. J. Stanton

Phys. Rev. B 94, 195207 (2016) - Published 17 November, 2016

Self-diffusion measurements in isotopic heterostructures of undoped and in situ doped ZnO: Zinc vacancy energetics

Alexander Azarov, Vishnukanthan Venkatachalapathy, Zengxia Mei, Lishu Liu, Xiaolong Du, Augustinas Galeckas, Edouard Monakhov, Bengt G. Svensson, and Andrej Kuznetsov

Phys. Rev. B 94, 195208 (2016) - Published 17 November, 2016

Optical transitions from the lowest to higher exciton and biexciton Rydberg states in CuCl

K. Miyajima, K. Sakaniwa, and M. Sugawara

Phys. Rev. B 94, 195209 (2016) - Published 28 November, 2016

Vanadium interactions in crystalline silicon

D. J. Backlund, T. M. Gibbons, and S. K. Estreicher

Phys. Rev. B 94, 195210 (2016) - Published 28 November, 2016

Reversible devitrification in amorphous As2Se3 under pressure

Azkar Saeed Ahmad, Hong-Bo Lou, Chuan-Long Lin, Ai-Guo Li, Ke Yang, K. Glazyrin, H. P. Liermann, Hermann Franz, Kenny Ståhl, Shuo Cui, Bruno Bureau, Dong-Xian Zhang, Xiao-Dong Wang, Qing-Ping Cao, A. Lindsay Greer, and Jian-Zhong Jiang

Phys. Rev. B 94, 195211 (2016) - Published 28 November, 2016

Semiconductors II: surfaces, interfaces, microstructures, and related topics

Coherent and incoherent aspects of polariton dynamics in semiconductor microcavities

N. Takemura, M. D. Anderson, S. Biswas, M. Navadeh-Toupchi, D. Y. Oberli, M. T. Portella-Oberli, and B. Deveaud

Phys. Rev. B 94, 195301 (2016) - Published 3 November, 2016

Loss of coherence in cavity-polariton condensates: Effect of disorder versus exciton reservoir

A. A. Demenev, Ya. V. Grishina, S. I. Novikov, V. D. Kulakovskii, C. Schneider, and S. Höfling

Phys. Rev. B 94, 195302 (2016) - Published 3 November, 2016

Surface anisotropy energy in terms of magnetocrystalline anisotropy fields in ferromagnetic semiconductor (Ga,Mn)As thin films

H. Puszkarski, P. Tomczak, and H. T. Diep

Phys. Rev. B 94, 195303 (2016) - Published 7 November, 2016

Classical origin of conductance oscillations in an integrable cavity

Christina Pöltl, Aleksey Kozikov, Klaus Ensslin, Thomas Ihn, Rodolfo A. Jalabert, Christian Reichl, Werner Wegscheider, and Dietmar Weinmann

Phys. Rev. B 94, 195304 (2016) - Published 7 November, 2016

Quantum transport of electrons through ultraclean two-dimensional cavities depends sensitively on the geometry. In scanning gate microscopy, the charged tip is a valuable tool to tune the shape of a cavity while measuring its conductance, and thus to address questions of quantum chaos, such as the relevance of the underlying classical electron dynamics. For the tip placed in the center of an integrable cavity of circular shape, a remarkable nonmonotonic variation of the conductance is measured as a function of the voltage applied to the tip. Numerical simulations yield conductance oscillations with tip strength that agree well with the experimental findings. A semiclassical analysis of the conductance, based on the classical trajectories transmitted through the cavity, reproduces the conductance oscillations, proving that the effect is of classical origin. Remarkably, only particular classes of short trajectories are responsible for the effect within this semiclassical analysis. When the strength of the tip-induced potential is increased, the character of the dominant trajectories alternates between transmitted and reflected ones, thereby providing an unusually simple explanation for the observed phenomenon.

Dispersive readout of valley splittings in cavity-coupled silicon quantum dots

Guido Burkard and J. R. Petta

Phys. Rev. B 94, 195305 (2016) - Published 14 November, 2016

Lazarevicite-type short-range ordering in ternary III-V nanowires

M. Schnedler, I. Lefebvre, T. Xu, V. Portz, G. Patriarche, J.-P. Nys, S. R. Plissard, P. Caroff, M. Berthe, H. Eisele, R. E. Dunin-Borkowski, Ph. Ebert, and B. Grandidier

Phys. Rev. B 94, 195306 (2016) - Published 14 November, 2016

Density functional theory study of bulk and single-layer magnetic semiconductor CrPS4

Houlong L. Zhuang and Jia Zhou

Phys. Rev. B 94, 195307 (2016) - Published 16 November, 2016

Surface-sensitive measurement of dielectric screening via atom and electron manipulations

Daejin Eom, Eonmi Seo, and Ja-Yong Koo

Phys. Rev. B 94, 195308 (2016) - Published 16 November, 2016

Electronic structure and stability of the CH3NH3PbBr3 (001) surface

Xin Huang, Tula R. Paudel, Peter A. Dowben, Shuai Dong, and Evgeny Y. Tsymbal

Phys. Rev. B 94, 195309 (2016) - Published 22 November, 2016

Towards spin turbulence of light: Spontaneous disorder and chaos in cavity-polariton systems

S. S. Gavrilov

Phys. Rev. B 94, 195310 (2016) - Published 22 November, 2016

Nonlinear transport of the inhomogeneous Wigner solid in a channel geometry

A. O. Badrutdinov, A. V. Smorodin, D. G. Rees, J. Y. Lin, and D. Konstantinov

Phys. Rev. B 94, 195311 (2016) - Published 23 November, 2016

Positive quantum magnetoresistance in tilted magnetic field

William Mayer, Areg Ghazaryan, Pouyan Ghaemi, Sergey Vitkalov, and A. A. Bykov

Phys. Rev. B 94, 195312 (2016) - Published 23 November, 2016

Photocarrier transport dynamics in InAs/GaAs quantum dot superlattice solar cells using time-of-flight spectroscopy

T. Tanibuchi, T. Kada, S. Asahi, D. Watanabe, T. Kaizu, Y. Harada, and T. Kita

Phys. Rev. B 94, 195313 (2016) - Published 28 November, 2016

Purcell enhancement of fast-dephasing spontaneous emission from electron-hole droplets in high-Q silicon photonic crystal nanocavities

Hisashi Sumikura, Eiichi Kuramochi, Hideaki Taniyama, and Masaya Notomi

Phys. Rev. B 94, 195314 (2016) - Published 29 November, 2016

Lorentz force effects for graphene Aharonov-Bohm interferometers

A. Mreńca-Kolasińska and B. Szafran

Phys. Rev. B 94, 195315 (2016) - Published 30 November, 2016

Surface physics, nanoscale physics, low-dimensional systems

Magnetotransport signatures of the proximity exchange and spin-orbit couplings in graphene

Jeongsu Lee and Jaroslav Fabian

Phys. Rev. B 94, 195401 (2016) - Published 1 November, 2016

Possibility of combining ferroelectricity and Rashba-like spin splitting in monolayers of the 1T-type transition-metal dichalcogenides MX2(M=Mo,W;X=S,Se,Te)

Emilie Bruyer, Domenico Di Sante, Paolo Barone, Alessandro Stroppa, Myung-Hwan Whangbo, and Silvia Picozzi

Phys. Rev. B 94, 195402 (2016) - Published 3 November, 2016

Mg(OH)2−WS2 van der Waals heterobilayer: Electric field tunable band-gap crossover

M. Yagmurcukardes, E. Torun, R. T. Senger, F. M. Peeters, and H. Sahin

Phys. Rev. B 94, 195403 (2016) - Published 3 November, 2016

Two-dimensional wide-band-gap nitride semiconductors: Single-layer 1T−XN2(X=S,Se, and Te)

Jia-He Lin, Hong Zhang, Xin-Lu Cheng, and Yoshiyuki Miyamoto

Phys. Rev. B 94, 195404 (2016) - Published 3 November, 2016

Quantum electrodynamic approach to the conductivity of gapped graphene

G. L. Klimchitskaya and V. M. Mostepanenko

Phys. Rev. B 94, 195405 (2016) - Published 4 November, 2016

Surface reconstruction of Pt(001) quantitatively revisited

R. Hammer, K. Meinel, O. Krahn, and W. Widdra

Phys. Rev. B 94, 195406 (2016) - Published 7 November, 2016

Quantitative analysis of sideband coupling in photoinduced force microscopy

Junghoon Jahng, Bongsu Kim, Eun Seong Lee, and Eric Olaf Potma

Phys. Rev. B 94, 195407 (2016) - Published 7 November, 2016

Termination of single-crystal Bi2Se3 surfaces prepared by various methods

Weimin Zhou, Haoshan Zhu, and Jory A. Yarmoff

Phys. Rev. B 94, 195408 (2016) - Published 7 November, 2016

When polarons meet polaritons: Exciton-vibration interactions in organic molecules strongly coupled to confined light fields

Ning Wu, Johannes Feist, and Francisco J. Garcia-Vidal

Phys. Rev. B 94, 195409 (2016) - Published 8 November, 2016

Optical label-free and model-free probe of the surface potential of nanoscale and microscopic objects in aqueous solution

Cornelis Lütgebaucks, Grazia Gonella, and Sylvie Roke

Phys. Rev. B 94, 195410 (2016) - Published 10 November, 2016

Carrier-density-dependent recombination dynamics of excitons and electron-hole plasma in m-plane InGaN/GaN quantum wells

W. Liu, R. Butté, A. Dussaigne, N. Grandjean, B. Deveaud, and G. Jacopin

Phys. Rev. B 94, 195411 (2016) - Published 10 November, 2016

Exchange interaction-driven dynamic nuclear polarization in Mn-doped InGaAs/GaAs quantum dots

O. Krebs, E. Baudin, and A. Lemaître

Phys. Rev. B 94, 195412 (2016) - Published 10 November, 2016

Theory of multiexciton dynamics in molecular chains

Luxia Wang and Volkhard May

Phys. Rev. B 94, 195413 (2016) - Published 10 November, 2016

Aharonov-Bohm effect in a helical ring with long-range hopping: Effects of Rashba spin-orbit interaction and disorder

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

Phys. Rev. B 94, 195414 (2016) - Published 10 November, 2016

Magnetoresistance engineering and singlet/triplet switching in InAs nanowire quantum dots with ferromagnetic sidegates

G. Fábián, P. Makk, M. H. Madsen, J. Nygård, C. Schönenberger, and A. Baumgartner

Phys. Rev. B 94, 195415 (2016) - Published 10 November, 2016

Electronic, vibrational, Raman, and scanning tunneling microscopy signatures of two-dimensional boron nanomaterials

Daniel V. P. Massote, Liangbo Liang, Neerav Kharche, and Vincent Meunier

Phys. Rev. B 94, 195416 (2016) - Published 11 November, 2016

Molecular dynamics simulation of polymerlike thin films irradiated by fast ions: A comparison between FENE and Lennard-Jones potentials

N. W. Lima, L. I. Gutierres, R. I. Gonzalez, S. Müller, R. S. Thomaz, E. M. Bringa, and R. M. Papaléo

Phys. Rev. B 94, 195417 (2016) - Published 11 November, 2016

Near-field relaxation of a quantum emitter to two-dimensional semiconductors: Surface dissipation and exciton polaritons

Vasilios D. Karanikolas, Cristian A. Marocico, Paul R. Eastham, and A. Louise Bradley

Phys. Rev. B 94, 195418 (2016) - Published 11 November, 2016

Strain-induced topological phase transition at zigzag edges of monolayer transition-metal dichalcogenides

Linhu Li, Eduardo V. Castro, and Pedro D. Sacramento

Phys. Rev. B 94, 195419 (2016) - Published 14 November, 2016

Spin correlation functions and decay of quasiparticles in XXZ spin chain at T>0

Igor Poboiko and Mikhail Feigel'man

Phys. Rev. B 94, 195420 (2016) - Published 14 November, 2016

Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: An analytical approach

P. A. D. Gonçalves, E. J. C. Dias, Yu. V. Bludov, and N. M. R. Peres

Phys. Rev. B 94, 195421 (2016) - Published 14 November, 2016

Polyyne electronic and vibrational properties under environmental interactions

Marius Wanko, Seymur Cahangirov, Lei Shi, Philip Rohringer, Zachary J. Lapin, Lukas Novotny, Paola Ayala, Thomas Pichler, and Angel Rubio

Phys. Rev. B 94, 195422 (2016) - Published 14 November, 2016

Tilted anisotropic Dirac cones in partially hydrogenated graphene

Hong-Yan Lu, Armindo S. Cuamba, Shih-Yang Lin, Lei Hao, Rui Wang, Hai Li, YuanYuan Zhao, and C. S. Ting

Phys. Rev. B 94, 195423 (2016) - Published 15 November, 2016

Substrate-supported large-band-gap quantum spin Hall insulator based on III-V bismuth layers

J. E. Padilha, A. Janotti, A. Fazzio, and A. J. R. da Silva

Phys. Rev. B 94, 195424 (2016) - Published 16 November, 2016

Strong spin-orbit splitting and magnetism of point defect states in monolayer WS2

Wun-Fan Li, Changming Fang, and Marijn A. van Huis

Phys. Rev. B 94, 195425 (2016) - Published 16 November, 2016

Three-dimensional higher-spin Dirac and Weyl dispersions in the strongly isotropic K4 crystal

Masahisa Tsuchiizu

Phys. Rev. B 94, 195426 (2016) - Published 16 November, 2016

Exciting reflectionless unidirectional edge modes in a reciprocal photonic topological insulator medium

Bo Xiao, Kueifu Lai, Yang Yu, Tzuhsuan Ma, Gennady Shvets, and Steven M. Anlage

Phys. Rev. B 94, 195427 (2016) - Published 17 November, 2016

Electron backscattering in a cavity: Ballistic and coherent effects

A. A. Kozikov, D. Weinmann, C. Rössler, T. Ihn, K. Ensslin, C. Reichl, and W. Wegscheider

Phys. Rev. B 94, 195428 (2016) - Published 17 November, 2016

Hybrid functionals with fixed mixing parameter perform no better than PBE for fundamental band gaps of nanoscale materials

Xinquan Wang, Marc Dvorak, and Zhigang Wu

Phys. Rev. B 94, 195429 (2016) - Published 21 November, 2016

Quantum elasticity of graphene: Thermal expansion coefficient and specific heat

I. S. Burmistrov, I. V. Gornyi, V. Yu. Kachorovskii, M. I. Katsnelson, and A. D. Mirlin

Phys. Rev. B 94, 195430 (2016) - Published 21 November, 2016

Non-Hermitian approach of edge states and quantum transport in a magnetic field

B. Ostahie, M. Niţa, and A. Aldea

Phys. Rev. B 94, 195431 (2016) - Published 21 November, 2016

Magnet-free nonreciprocal bianisotropic metasurfaces

Y. Ra'di and A. Grbic

Phys. Rev. B 94, 195432 (2016) - Published 21 November, 2016

Full-counting statistics of time-dependent conductors

Mónica Benito, Michael Niklas, and Sigmund Kohler

Phys. Rev. B 94, 195433 (2016) - Published 21 November, 2016

Rapid propagation of a Bloch wave packet excited by a femtosecond ultraviolet pulse

E. E. Krasovskii, C. Friedrich, W. Schattke, and P. M. Echenique

Phys. Rev. B 94, 195434 (2016) - Published 22 November, 2016

Co diffusion in the near-surface region of Cu

T. Siahaan, O. Kurnosikov, H. J. M. Swagten, B. Koopmans, S. V. Kolesnikov, A. M. Saletsky, and A. L. Klavsyuk

Phys. Rev. B 94, 195435 (2016) - Published 23 November, 2016

Q-factor enhancement in all-dielectric anisotropic nanoresonators

Wei Liu, Andrey E. Miroshnichenko, and Yuri S. Kivshar

Phys. Rev. B 94, 195436 (2016) - Published 23 November, 2016

Role of π−d hybridization in a 300-K organic-magnetic interface: Metal-free phthalocyanine single molecules on a bcc Fe(001) whisker

T. K. Yamada, Y. Yamagishi, S. Nakashima, Y. Kitaoka, and K. Nakamura

Phys. Rev. B 94, 195437 (2016) - Published 28 November, 2016

Pumping electrons in graphene to the M point in the Brillouin zone: Emergence of anisotropic plasmons

A. J. Chaves, N. M. R. Peres, and Tony Low

Phys. Rev. B 94, 195438 (2016) - Published 28 November, 2016

Graphene pn junction in a quantizing magnetic field: Conductance at intermediate disorder strength

Christian Fräßdorf, Luka Trifunovic, Nils Bogdanoff, and Piet W. Brouwer

Phys. Rev. B 94, 195439 (2016) - Published 28 November, 2016

Nonlinear damping and dephasing in nanomechanical systems

Juan Atalaya, Thomas W. Kenny, M. L. Roukes, and M. I. Dykman

Phys. Rev. B 94, 195440 (2016) - Published 28 November, 2016

Spectroscopic STM studies of single pentacene molecules on Cu(110)−c(6×2)O

Johannes Gall, Peter Zeppenfeld, Lidong Sun, Li Zhang, Yang Luo, Zhenchao Dong, Chunguang Hu, and Peter Puschnig

Phys. Rev. B 94, 195441 (2016) - Published 29 November, 2016

Second-order nonlinear optical response of graphene

Yongrui Wang, Mikhail Tokman, and Alexey Belyanin

Phys. Rev. B 94, 195442 (2016) - Published 30 November, 2016

ERRATA

Erratum: Theory of two-dimensional spatially indirect equilibrium exciton condensates [Phys. Rev. B 92, 165121 (2015)]

Feng-Cheng Wu, Fei Xue, and A. H. MacDonald

Phys. Rev. B 94, 199901 (2016) - Published 28 November, 2016

Erratum: Adiabatic passage mediated by plasmons: A route towards a decoherence-free quantum plasmonic platform [Phys. Rev. B 93, 045422 (2016)]

B. Rousseaux, D. Dzsotjan, G. Colas des Francs, H. R. Jauslin, C. Couteau, and S. Guérin

Phys. Rev. B 94, 199902 (2016) - Published 28 November, 2016

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