Browse Issues:

HIGHLIGHTED ARTICLES

Optical detection of transverse spin-Seebeck effect in permalloy film using Sagnac interferometer microscopy

Ryan McLaughlin, Dali Sun, Chuang Zhang, Matthew Groesbeck, and Z. Valy Vardeny

Phys. Rev. B 95, 180401(R) (2017) - Published 8 May, 2017

Here, the authors investigate the possibility of building up nonequilibrium spin accumulation in a ferromagnetic thin film composed of a metallic alloy of nickel and iron, commonly known as permalloy. Analogously to thermoelectric generators, a temperature gradient in a ferromagnet is known to generate a distribution of accumulated electron spins over macroscopic distances, which may be used as an efficient source of spin-polarized electrons in future spintronic devices. To enable the detection and quantitative determination of this imbalance of electron spins, the authors have developed an entirely optical technique, based on the magneto-optical Kerr effect, using a Sagnac interferometer microscope with a spatial resolution of one micrometer and an absolute polarization angle resolution of ten nanoradians. This new technique is not only robust against electrical artifacts, but allows the user to measure previously inaccessible experimental geometries where the magnetization is not restricted to lying in the plane of the film.

Phase diagram of α−RuCl3 in an in-plane magnetic field

J. A. Sears, Y. Zhao, Z. Xu, J. W. Lynn, and Young-June Kim

Phys. Rev. B 95, 180411(R) (2017) - Published 31 May, 2017

The Kitaev model is a spin model on a honeycomb lattice with bond-dependent anisotropic interactions whose ground state is an exactly solvable example of a quantum spin liquid. Interest in this model has been growing rapidly due to the potential for realization of this artificial model in insulating materials with strong spin-orbit interactions. One such example is the layered honeycomb material α-RuCl3. Although this material orders magnetically rather than realizing a spin liquid ground state, there have been suggestions that suppression of the magnetic order through application of magnetic field could reveal a quantum spin liquid phase in this material. In this work, the authors examine the temperature-field phase diagram of α-RuCl3 using neutron diffraction and bulk thermodynamic measurements. They found that the magnetic order disappears at magnetic fields above 8 Tesla, and a magnetic gap showing quantum critical scaling opens up in the high field phase.

Scaling of subgap excitations in a superconductor-semiconductor nanowire quantum dot

Eduardo J. H. Lee, Xiaocheng Jiang, Rok Žitko, Ramón Aguado, Charles M. Lieber, and Silvano De Franceschi

Phys. Rev. B 95, 180502(R) (2017) - Published 15 May, 2017

The subgap excitations known as Andreev levels govern the low-energy physics of hybrid superconductor-semiconductor nanostructures, and lie at the origin of topological superconductivity. A quantitative understanding of their scaling with respect to relevant parameters is, however, still limited. Here, the authors address this issue for the prototypical case of a quantum dot coupled to a superconductor. Experimentally, the authors demonstrate the ability to controllably tune the hybridization of the dot and the superconductor. In addition, they develop a methodology to reliably extract the relevant parameters by numerically adjusting the Anderson model to the experimental data. As a result, they carefully study the scaling of Andreev levels within the parameter space and obtain an experimental phase diagram of the system. Their results show an impressive quantitative agreement with the theory.

Acoustic waves undetectable by transient reflectivity measurements

Chuan He, Oliver Ristow, Martin Grossmann, Delia Brick, Yuning Guo, Martin Schubert, Mike Hettich, Vitalyi Gusev, and Thomas Dekorsy

Phys. Rev. B 95, 184302 (2017) - Published 11 May, 2017

In laser ultrasonics, ultrashort light pulses generate coherent acoustic pulses of picosecond duration via multiple possible physical mechanisms, involving optoacoustic conversion processes. These wide-band GHz acoustic signals are optically detected at the sample surfaces by ultrafast time-delayed probe light pulses. When the coherent acoustic pulses in GaAS are detected via the Brillouin scattering of probe light pulses of 400 nm wavelength, certain spectral components of the acoustic pulses remain invisible. The theoretical analysis relates this observation to the existence of zeros in the spectral transformation function of acousto-optic conversion. The phenomenon of zero sensitivity of the optical reflectivity to coherent acoustic phonons of particular frequencies is rather general and depends on both the probe light wavelength and the evaluated material. These findings substantially contribute to picosecond ultrasonics and laser-based nondestructive testing.

Nonstoquastic Hamiltonians and quantum annealing of an Ising spin glass

Layla Hormozi, Ethan W. Brown, Giuseppe Carleo, and Matthias Troyer

Phys. Rev. B 95, 184416 (2017) - Published 15 May, 2017

Quantum annealers are computing machines that utilize quantum effects to solve hard optimization problems. Understanding the circumstances under which quantum annealers are more efficient than other optimization methods is a challenging open problem. A clue to this conundrum comes from studying the complexity of quantum annealers. In general, the complexity of a physical system relates to how efficiently the system can be simulated by classical algorithms. One then asks: if some class of quantum annealers are hard to simulate classically, are they also more powerful optimization machines? Here, the authors study quantum annealers belonging to two different complexity classes: the so-called “stoquastic” systems, which can be efficiently simulated with classical algorithms, and “nonstoquastic” systems, currently with no efficient classical treatment. Applied to a prototypical optimization problem, the authors observe that, on average, the stoquastic systems perform better on easier instances of the problem, while the more complex nonstoquastic annealers show significant advantage when applied to the hardest instances. The authors conjecture that the performance of the nonstoquastic Hamiltonians is closely related to their internal structure during the annealing process and elucidate how properties such as magnetic frustration can play a key role in devising more powerful quantum annealers.

Structural dynamics during laser-induced ultrafast demagnetization

Emmanuelle Jal, Víctor López-Flores, Niko Pontius, Tom Ferté, Nicolas Bergeard, Christine Boeglin, Boris Vodungbo, Jan Lüning, and Nicolas Jaouen

Phys. Rev. B 95, 184422 (2017) - Published 18 May, 2017

Despite two decades of intense research, the origin of ultrafast demagnetization remains disputed. Here, the authors employ resonant magnetic x-ray reflectivity to follow simultaneously magnetization and structural dynamics at the BESSY femtoslicing source. They find that significant changes in nonmagnetic x-ray reflectivity accompany the subpicosecond demagnetization, which can be modeled as a variation of film thickness. Their simulations further show that the higher photon flux and energy resolution provided by x-ray free electron lasers will yield decisive data to differentiate between different mechanisms proposed to govern ultrafast demagnetization dynamics.

Odd-frequency superconductivity in a nanowire coupled to Majorana zero modes

Shu-Ping Lee, Roman M. Lutchyn, and Joseph Maciejko

Phys. Rev. B 95, 184506 (2017) - Published 8 May, 2017

Here, the authors argue that the recent experimental discovery of Majorana zero modes in topological superconductors may be the key to realizing an elusive state of matter, the odd-frequency superconductor, in which Cooper pairing is entirely dynamical in nature. Via an exactly soluble model, it is shown that when Majorana zero modes couple to a spin-polarized metallic system, equal-spin s-wave odd-frequency pairing is generically induced in the spin-polarized metal. The key properties of odd-frequency superconductivity, such as a vanishing static superconducting order parameter and a paramagnetic Meissner effect, are demonstrated in this system by explicit calculations.

RAPID COMMUNICATIONS

Structure, structural phase transitions, mechanical properties, defects

Origins of the structural phase transitions in MoTe2 and WTe2

Hyun-Jung Kim, Seoung-Hun Kang, Ikutaro Hamada, and Young-Woo Son

Phys. Rev. B 95, 180101(R) (2017) - Published 1 May, 2017

Nonicosahedral boron allotrope synthesized at high pressure and high temperature

Irina Chuvashova, Elena Bykova, Maxim Bykov, Vitali Prakapenka, Konstantin Glazyrin, Mohamed Mezouar, Leonid Dubrovinsky, and Natalia Dubrovinskaia

Phys. Rev. B 95, 180102(R) (2017) - Published 16 May, 2017

Defect motion in a quantum solid with spin: hcp He3

Zhi Gang Cheng and John Beamish

Phys. Rev. B 95, 180103(R) (2017) - Published 30 May, 2017

Broadband solid cloak for underwater acoustics

Yi Chen, Mingye Zheng, Xiaoning Liu, Yafeng Bi, Zhaoyong Sun, Ping Xiang, Jun Yang, and Gengkai Hu

Phys. Rev. B 95, 180104(R) (2017) - Published 30 May, 2017

Inhomogeneous, disordered, and partially ordered systems

Excitonic coupling dominates the homogeneous photoluminescence excitation linewidth in semicrystalline polymeric semiconductors

Pascal Grégoire, Eleonora Vella, Matthew Dyson, Claudia M. Bazán, Richard Leonelli, Natalie Stingelin, Paul N. Stavrinou, Eric R. Bittner, and Carlos Silva

Phys. Rev. B 95, 180201(R) (2017) - Published 11 May, 2017

Instability of the topological surface state in Bi2Se3 upon deposition of gold

A. Polyakov, C. Tusche, M. Ellguth, E. D. Crozier, K. Mohseni, M. M. Otrokov, X. Zubizarreta, M. G. Vergniory, M. Geilhufe, E. V. Chulkov, A. Ernst, H. L. Meyerheim, and S. S. P. Parkin

Phys. Rev. B 95, 180202(R) (2017) - Published 18 May, 2017

Dynamics, dynamical systems, lattice effects

Native surface oxide turns alloyed silicon membranes into nanophononic metamaterials with ultralow thermal conductivity

Shiyun Xiong, Daniele Selli, Sanghamitra Neogi, and Davide Donadio

Phys. Rev. B 95, 180301(R) (2017) - Published 9 May, 2017

Critical behavior at dynamical phase transition in the generalized Bose-Anderson model

Dmitry V. Chichinadze and Alexey N. Rubtsov

Phys. Rev. B 95, 180302(R) (2017) - Published 18 May, 2017

Magnetism

Optical detection of transverse spin-Seebeck effect in permalloy film using Sagnac interferometer microscopy

Ryan McLaughlin, Dali Sun, Chuang Zhang, Matthew Groesbeck, and Z. Valy Vardeny

Phys. Rev. B 95, 180401(R) (2017) - Published 8 May, 2017

Here, the authors investigate the possibility of building up nonequilibrium spin accumulation in a ferromagnetic thin film composed of a metallic alloy of nickel and iron, commonly known as permalloy. Analogously to thermoelectric generators, a temperature gradient in a ferromagnet is known to generate a distribution of accumulated electron spins over macroscopic distances, which may be used as an efficient source of spin-polarized electrons in future spintronic devices. To enable the detection and quantitative determination of this imbalance of electron spins, the authors have developed an entirely optical technique, based on the magneto-optical Kerr effect, using a Sagnac interferometer microscope with a spatial resolution of one micrometer and an absolute polarization angle resolution of ten nanoradians. This new technique is not only robust against electrical artifacts, but allows the user to measure previously inaccessible experimental geometries where the magnetization is not restricted to lying in the plane of the film.

Antiferromagnetic textures and dynamics on the surface of a heavy metal

Ricardo Zarzuela and Yaroslav Tserkovnyak

Phys. Rev. B 95, 180402(R) (2017) - Published 8 May, 2017

Unconventional magnetic order in the conical state of MnSi

P. Dalmas de Réotier, A. Maisuradze, A. Yaouanc, B. Roessli, A. Amato, D. Andreica, and G. Lapertot

Phys. Rev. B 95, 180403(R) (2017) - Published 10 May, 2017

Emergent Haldane phase in the S=1 bilinear-biquadratic Heisenberg model on the square lattice

Ido Niesen and Philippe Corboz

Phys. Rev. B 95, 180404(R) (2017) - Published 22 May, 2017

Spin analogs of superconductivity and integer quantum Hall effect in an array of spin chains

Daniel Hill, Se Kwon Kim, and Yaroslav Tserkovnyak

Phys. Rev. B 95, 180405(R) (2017) - Published 24 May, 2017

Achiral tilted domain walls in perpendicularly magnetized nanowires

B. Boehm, A. Bisig, A. Bischof, G. Stefanou, B. J. Hickey, and R. Allenspach

Phys. Rev. B 95, 180406(R) (2017) - Published 25 May, 2017

Bose-Einstein condensation of triplons in the S=1 tetramer antiferromagnet K2Ni2(MoO4)3: A compound close to a quantum critical point

B. Koteswararao, P. Khuntia, R. Kumar, A. V. Mahajan, Arvind Yogi, M. Baenitz, Y. Skourski, and F. C. Chou

Phys. Rev. B 95, 180407(R) (2017) - Published 30 May, 2017

Annihilation of domain walls in a ferromagnetic wire

Anirban Ghosh, Kevin S. Huang, and Oleg Tchernyshyov

Phys. Rev. B 95, 180408(R) (2017) - Published 30 May, 2017

Ultrafast magnetic switching of GdFeCo with electronic heat currents

R. B. Wilson, Jon Gorchon, Yang Yang, Charles-Henri Lambert, Sayeef Salahuddin, and Jeffrey Bokor

Phys. Rev. B 95, 180409(R) (2017) - Published 30 May, 2017

Thermodynamically stable skyrmion lattice at low temperatures in a bulk crystal of lacunar spinel GaV4Se8

Y. Fujima, N. Abe, Y. Tokunaga, and T. Arima

Phys. Rev. B 95, 180410(R) (2017) - Published 30 May, 2017

Phase diagram of α−RuCl3 in an in-plane magnetic field

J. A. Sears, Y. Zhao, Z. Xu, J. W. Lynn, and Young-June Kim

Phys. Rev. B 95, 180411(R) (2017) - Published 31 May, 2017

The Kitaev model is a spin model on a honeycomb lattice with bond-dependent anisotropic interactions whose ground state is an exactly solvable example of a quantum spin liquid. Interest in this model has been growing rapidly due to the potential for realization of this artificial model in insulating materials with strong spin-orbit interactions. One such example is the layered honeycomb material α-RuCl3. Although this material orders magnetically rather than realizing a spin liquid ground state, there have been suggestions that suppression of the magnetic order through application of magnetic field could reveal a quantum spin liquid phase in this material. In this work, the authors examine the temperature-field phase diagram of α-RuCl3 using neutron diffraction and bulk thermodynamic measurements. They found that the magnetic order disappears at magnetic fields above 8 Tesla, and a magnetic gap showing quantum critical scaling opens up in the high field phase.

Superfluidity and superconductivity

Fast recovery of the stripe magnetic order by Mn/Fe substitution in F-doped LaFeAsO superconductors

M. Moroni, P. Carretta, G. Allodi, R. De Renzi, M. N. Gastiasoro, B. M. Andersen, P. Materne, H.-H. Klauss, Y. Kobayashi, M. Sato, and S. Sanna

Phys. Rev. B 95, 180501(R) (2017) - Published 9 May, 2017

Scaling of subgap excitations in a superconductor-semiconductor nanowire quantum dot

Eduardo J. H. Lee, Xiaocheng Jiang, Rok Žitko, Ramón Aguado, Charles M. Lieber, and Silvano De Franceschi

Phys. Rev. B 95, 180502(R) (2017) - Published 15 May, 2017

The subgap excitations known as Andreev levels govern the low-energy physics of hybrid superconductor-semiconductor nanostructures, and lie at the origin of topological superconductivity. A quantitative understanding of their scaling with respect to relevant parameters is, however, still limited. Here, the authors address this issue for the prototypical case of a quantum dot coupled to a superconductor. Experimentally, the authors demonstrate the ability to controllably tune the hybridization of the dot and the superconductor. In addition, they develop a methodology to reliably extract the relevant parameters by numerically adjusting the Anderson model to the experimental data. As a result, they carefully study the scaling of Andreev levels within the parameter space and obtain an experimental phase diagram of the system. Their results show an impressive quantitative agreement with the theory.

Unusual upper critical field behavior in Nb-doped bismuth selenides

Kaya Kobayashi, T. Ueno, H. Fujiwara, T. Yokoya, and J. Akimitsu

Phys. Rev. B 95, 180503(R) (2017) - Published 16 May, 2017

Pressure-induced magnetic order in FeSe: A muon spin rotation study

Rustem Khasanov, Zurab Guguchia, Alex Amato, Elvezio Morenzoni, Xiaoli Dong, Fang Zhou, and Zhongxian Zhao

Phys. Rev. B 95, 180504(R) (2017) - Published 18 May, 2017

Weak phonon-mediated pairing in BiS2 superconductor from first principles

Corentin Morice, Ryosuke Akashi, Takashi Koretsune, Siddharth S. Saxena, and Ryotaro Arita

Phys. Rev. B 95, 180505(R) (2017) - Published 19 May, 2017

ARTICLES

Structure, structural phase transitions, mechanical properties, defects

Ab initio based empirical potential applied to tungsten at high pressure

Robert C. Ehemann, Jeremy W. Nicklas, Hyoungki Park, and John W. Wilkins

Phys. Rev. B 95, 184101 (2017) - Published 1 May, 2017

Prediction of two-dimensional electron gas mediated magnetoelectric coupling at ferroelectric PbTiO3/SrTiO3 heterostructures

Lan-ying Wei, Chao Lian, and Sheng Meng

Phys. Rev. B 95, 184102 (2017) - Published 1 May, 2017

Instability of the Sb vacancy in GaSb

N. Segercrantz, J. Slotte, F. Tuomisto, K. Mizohata, and J. Räisänen

Phys. Rev. B 95, 184103 (2017) - Published 3 May, 2017

Crystal truncation rods from miscut surfaces

Trevor A. Petach, Apurva Mehta, Michael F. Toney, and David Goldhaber-Gordon

Phys. Rev. B 95, 184104 (2017) - Published 8 May, 2017

Single-axis-dependent structural and multiferroic properties of orthorhombic RMnO3(R=Gd–Lu)

Kenta Shimamoto, Saumya Mukherjee, Nicholas S. Bingham, Anna K. Suszka, Thomas Lippert, Christof Niedermayer, and Christof W. Schneider

Phys. Rev. B 95, 184105 (2017) - Published 8 May, 2017

Manipulating the mechanical properties of Ti2C MXene: Effect of substitutional doping

Poulami Chakraborty, Tilak Das, Dhani Nafday, Lilia Boeri, and Tanusri Saha-Dasgupta

Phys. Rev. B 95, 184106 (2017) - Published 18 May, 2017

Coexistence of G- and C-type orbital ordered phases and its correlation with magnetization reversal in YVO3

Rana Saha, Francois Fauth, Vincent Caignaert, and A. Sundaresan

Phys. Rev. B 95, 184107 (2017) - Published 19 May, 2017

Combined impact of strain and stoichiometry on the structural and ferroelectric properties of epitaxially grown Na1+xNbO3+δ films on (110) NdGaO3

Biya Cai, J. Schwarzkopf, C. Feldt, J. Sellmann, T. Markurt, and R. Wördenweber

Phys. Rev. B 95, 184108 (2017) - Published 23 May, 2017

Structural and thermal effects of ion-irradiation induced defect configurations in silicon

Krishnan Swaminathan-Gopalan, Taishan Zhu, Elif Ertekin, and Kelly A. Stephani

Phys. Rev. B 95, 184109 (2017) - Published 24 May, 2017

Global search for low-lying crystal structures using the artificial force induced reaction method: A case study on carbon

Makito Takagi, Tetsuya Taketsugu, Hiori Kino, Yoshitaka Tateyama, Kiyoyuki Terakura, and Satoshi Maeda

Phys. Rev. B 95, 184110 (2017) - Published 30 May, 2017

Properties of B4C in the shocked state for pressures up to 1.5 TPa

Andrew Shamp, Eva Zurek, Tadashi Ogitsu, Dayne E. Fratanduono, and Sebastien Hamel

Phys. Rev. B 95, 184111 (2017) - Published 31 May, 2017

Recognition of exchange striction as the origin of magnetoelectric coupling in multiferroics

G. Yahia, F. Damay, S. Chattopadhyay, V. Balédent, W. Peng, E. Elkaim, M. Whitaker, M. Greenblatt, M.-B. Lepetit, and P. Foury-Leylekian

Phys. Rev. B 95, 184112 (2017) - Published 31 May, 2017

Inhomogeneous, disordered, and partially ordered systems

Dynamical signature of localization-delocalization transition in a one-dimensional incommensurate lattice

Chao Yang, Yucheng Wang, Pei Wang, Xianlong Gao, and Shu Chen

Phys. Rev. B 95, 184201 (2017) - Published 17 May, 2017

Emergent facilitation behavior in a distinguishable-particle lattice model of glass

Ling-Han Zhang and Chi-Hang Lam

Phys. Rev. B 95, 184202 (2017) - Published 19 May, 2017

Critical behavior of the two-dimensional Coulomb glass at zero temperature

Preeti Bhandari, Vikas Malik, and Syed Rashid Ahmad

Phys. Rev. B 95, 184203 (2017) - Published 23 May, 2017

Dynamics, dynamical systems, lattice effects

Manipulation of the dielectric properties of diamond by an ultrashort laser pulse

Xiaoqin Zhang, Feng Wang, Lan Jiang, and Yugui Yao

Phys. Rev. B 95, 184301 (2017) - Published 2 May, 2017

Acoustic waves undetectable by transient reflectivity measurements

Chuan He, Oliver Ristow, Martin Grossmann, Delia Brick, Yuning Guo, Martin Schubert, Mike Hettich, Vitalyi Gusev, and Thomas Dekorsy

Phys. Rev. B 95, 184302 (2017) - Published 11 May, 2017

In laser ultrasonics, ultrashort light pulses generate coherent acoustic pulses of picosecond duration via multiple possible physical mechanisms, involving optoacoustic conversion processes. These wide-band GHz acoustic signals are optically detected at the sample surfaces by ultrafast time-delayed probe light pulses. When the coherent acoustic pulses in GaAS are detected via the Brillouin scattering of probe light pulses of 400 nm wavelength, certain spectral components of the acoustic pulses remain invisible. The theoretical analysis relates this observation to the existence of zeros in the spectral transformation function of acousto-optic conversion. The phenomenon of zero sensitivity of the optical reflectivity to coherent acoustic phonons of particular frequencies is rather general and depends on both the probe light wavelength and the evaluated material. These findings substantially contribute to picosecond ultrasonics and laser-based nondestructive testing.

Ab initio lattice thermal conductivity of MgO from a complete solution of the linearized Boltzmann transport equation

Haruhiko Dekura (出倉春彦) and Taku Tsuchiya (土屋卓久)

Phys. Rev. B 95, 184303 (2017) - Published 16 May, 2017

Hydrodynamic phonon drift and second sound in a (20,20) single-wall carbon nanotube

Sangyeop Lee and Lucas Lindsay

Phys. Rev. B 95, 184304 (2017) - Published 18 May, 2017

Thermal conductance of interfaces with amorphous SiO2 measured by time-resolved magneto-optic Kerr-effect thermometry

Judith Kimling, André Philippi-Kobs, Jonathan Jacobsohn, Hans Peter Oepen, and David G. Cahill

Phys. Rev. B 95, 184305 (2017) - Published 22 May, 2017

Exceptional points in a non-Hermitian topological pump

Wenchao Hu, Hailong Wang, Perry Ping Shum, and Y. D. Chong

Phys. Rev. B 95, 184306 (2017) - Published 25 May, 2017

Interconnections between equilibrium topology and dynamical quantum phase transitions in a linearly ramped Haldane model

Utso Bhattacharya and Amit Dutta

Phys. Rev. B 95, 184307 (2017) - Published 30 May, 2017

Magnetism

Autoresonant magnetization switching by spin-orbit torques

Gyungchoon Go, Seung-Jae Lee, and Kyung-Jin Lee

Phys. Rev. B 95, 184401 (2017) - Published 2 May, 2017

Effects of uniaxial pressure on the quantum tunneling of magnetization in a high-symmetry Mn12 single-molecule magnet

James H. Atkinson, Adeline D. Fournet, Lakshmi Bhaskaran, Yuri Myasoedov, Eli Zeldov, Enrique del Barco, Stephen Hill, George Christou, and Jonathan R. Friedman

Phys. Rev. B 95, 184403 (2017) - Published 4 May, 2017

NMR determination of an incommensurate helical antiferromagnetic structure in EuCo2As2

Q.-P. Ding, N. Higa, N. S. Sangeetha, D. C. Johnston, and Y. Furukawa

Phys. Rev. B 95, 184404 (2017) - Published 5 May, 2017

Role of internal demagnetizing field for the dynamics of a surface-modulated magnonic crystal

M. Langer, F. Röder, R. A. Gallardo, T. Schneider, S. Stienen, C. Gatel, R. Hübner, L. Bischoff, K. Lenz, J. Lindner, P. Landeros, and J. Fassbender

Phys. Rev. B 95, 184405 (2017) - Published 5 May, 2017

Atomistic simulation of finite-temperature magnetism of nanoparticles: Application to cobalt clusters on Au(111)

A. Lászlóffy, L. Udvardi, and L. Szunyogh

Phys. Rev. B 95, 184406 (2017) - Published 8 May, 2017

Irreversible thermodynamics of uniform ferromagnets with spin accumulation: Bulk and interface dynamics

Wayne M. Saslow

Phys. Rev. B 95, 184407 (2017) - Published 8 May, 2017

Free energy of quantum spin systems: Functional integral representation

Peter Wölfle, Natalia B. Perkins, and Yuriy Sizyuk

Phys. Rev. B 95, 184408 (2017) - Published 9 May, 2017

Stability phase diagram of a perpendicular magnetic tunnel junction in noncollinear geometry

N. Strelkov, A. Timopheev, R. C. Sousa, M. Chshiev, L. D. Buda-Prejbeanu, and B. Dieny

Phys. Rev. B 95, 184409 (2017) - Published 9 May, 2017

HfO2 and SiO2 as barriers in magnetic tunneling junctions

Gokaran Shukla, Thomas Archer, and Stefano Sanvito

Phys. Rev. B 95, 184410 (2017) - Published 9 May, 2017

Directional electric-field induced transformation from skyrmion lattice to distinct helices in multiferroic Cu2OSeO3

Y. Okamura, Y. Yamasaki, D. Morikawa, T. Honda, V. Ukleev, H. Nakao, Y. Murakami, K. Shibata, F. Kagawa, S. Seki, T. Arima, and Y. Tokura

Phys. Rev. B 95, 184411 (2017) - Published 10 May, 2017

Static and dynamic magnetic properties of the spin-12 inequilateral diamond-chain compounds A3Cu3AlO2(SO4)4(A=K,Rb,Cs)

Katsuhiro Morita, Masayoshi Fujihala, Hiroko Koorikawa, Takanori Sugimoto, Shigetoshi Sota, Setsuo Mitsuda, and Takami Tohyama

Phys. Rev. B 95, 184412 (2017) - Published 11 May, 2017

Temperature-dependent magnetic anisotropy from pseudo-dipolar interactions

Hiroaki Ishizuka

Phys. Rev. B 95, 184413 (2017) - Published 12 May, 2017

Antiferromagnetic structure and electronic properties of BaCr2As2 and BaCrFeAs2

Kai A. Filsinger, Walter Schnelle, Peter Adler, Gerhard H. Fecher, Manfred Reehuis, Andreas Hoser, Jens-Uwe Hoffmann, Peter Werner, Martha Greenblatt, and Claudia Felser

Phys. Rev. B 95, 184414 (2017) - Published 12 May, 2017

Asymmetric spin-wave dispersion in ferromagnetic nanotubes induced by surface curvature

Jorge A. Otálora, Ming Yan, Helmut Schultheiss, Riccardo Hertel, and Attila Kákay

Phys. Rev. B 95, 184415 (2017) - Published 12 May, 2017

Nonstoquastic Hamiltonians and quantum annealing of an Ising spin glass

Layla Hormozi, Ethan W. Brown, Giuseppe Carleo, and Matthias Troyer

Phys. Rev. B 95, 184416 (2017) - Published 15 May, 2017

Quantum annealers are computing machines that utilize quantum effects to solve hard optimization problems. Understanding the circumstances under which quantum annealers are more efficient than other optimization methods is a challenging open problem. A clue to this conundrum comes from studying the complexity of quantum annealers. In general, the complexity of a physical system relates to how efficiently the system can be simulated by classical algorithms. One then asks: if some class of quantum annealers are hard to simulate classically, are they also more powerful optimization machines? Here, the authors study quantum annealers belonging to two different complexity classes: the so-called “stoquastic” systems, which can be efficiently simulated with classical algorithms, and “nonstoquastic” systems, currently with no efficient classical treatment. Applied to a prototypical optimization problem, the authors observe that, on average, the stoquastic systems perform better on easier instances of the problem, while the more complex nonstoquastic annealers show significant advantage when applied to the hardest instances. The authors conjecture that the performance of the nonstoquastic Hamiltonians is closely related to their internal structure during the annealing process and elucidate how properties such as magnetic frustration can play a key role in devising more powerful quantum annealers.

Current-induced damping of nanosized quantum moments in the presence of spin-orbit interaction

Farzad Mahfouzi and Nicholas Kioussis

Phys. Rev. B 95, 184417 (2017) - Published 15 May, 2017

Evolution of antiferromagnetic domains in the all-in-all-out ordered pyrochlore Nd2Zr2O7

L. Opherden, J. Hornung, T. Herrmannsdörfer, J. Xu, A. T. M. N. Islam, B. Lake, and J. Wosnitza

Phys. Rev. B 95, 184418 (2017) - Published 15 May, 2017

Effect of spin transfer torque on domain wall motion regimes in [Co/Ni] superlattice wires

S. Le Gall, N. Vernier, F. Montaigne, A. Thiaville, J. Sampaio, D. Ravelosona, S. Mangin, S. Andrieu, and T. Hauet

Phys. Rev. B 95, 184419 (2017) - Published 17 May, 2017

Magnetoelectric effect in the quantum spin gap system TlCuCl3

Shojiro Kimura, Kento Kakihata, Yuya Sawada, Kazuo Watanabe, Masashige Matsumoto, Masayuki Hagiwara, and Hidekazu Tanaka

Phys. Rev. B 95, 184420 (2017) - Published 17 May, 2017

Magnetic and magnetocaloric properties of HoCrO3 tuned by selective rare-earth doping

Shiqi Yin, Mohindar S. Seehra, Curtis J. Guild, Steven L. Suib, Narayan Poudel, Bernd Lorenz, and Menka Jain

Phys. Rev. B 95, 184421 (2017) - Published 18 May, 2017

Structural dynamics during laser-induced ultrafast demagnetization

Emmanuelle Jal, Víctor López-Flores, Niko Pontius, Tom Ferté, Nicolas Bergeard, Christine Boeglin, Boris Vodungbo, Jan Lüning, and Nicolas Jaouen

Phys. Rev. B 95, 184422 (2017) - Published 18 May, 2017

Despite two decades of intense research, the origin of ultrafast demagnetization remains disputed. Here, the authors employ resonant magnetic x-ray reflectivity to follow simultaneously magnetization and structural dynamics at the BESSY femtoslicing source. They find that significant changes in nonmagnetic x-ray reflectivity accompany the subpicosecond demagnetization, which can be modeled as a variation of film thickness. Their simulations further show that the higher photon flux and energy resolution provided by x-ray free electron lasers will yield decisive data to differentiate between different mechanisms proposed to govern ultrafast demagnetization dynamics.

Current-driven skyrmion expulsion from magnetic nanostrips

Myoung-Woo Yoo, Vincent Cros, and Joo-Von Kim

Phys. Rev. B 95, 184423 (2017) - Published 22 May, 2017

Frustrated spin-12 molecular magnetism in the mixed-valence antiferromagnets Ba3MRu2O9(M=In, Y, Lu)

D. Ziat, A. A. Aczel, R. Sinclair, Q. Chen, H. D. Zhou, T. J. Williams, M. B. Stone, A. Verrier, and J. A. Quilliam

Phys. Rev. B 95, 184424 (2017) - Published 22 May, 2017

Thermodynamics of the quantum spin liquid state of the single-component dimer Mott system κ−H3(Cat−EDT−TTF)2

Satoshi Yamashita, Yasuhiro Nakazawa, Akira Ueda, and Hatsumi Mori

Phys. Rev. B 95, 184425 (2017) - Published 22 May, 2017

Magnetic-field-induced ordered phase in the chloro-bridged copper(II) dimer system [Cu2(apyhist)2Cl2](ClO4)2

R. S. Freitas, W. A. Alves, and A. Paduan-Filho

Phys. Rev. B 95, 184426 (2017) - Published 22 May, 2017

Deconfined quantum criticality in SU(3) antiferromagnets on the triangular lattice

Dimitri Pimenov and Matthias Punk

Phys. Rev. B 95, 184427 (2017) - Published 25 May, 2017

Geometrical contributions to the exchange constants: Free electrons with spin-orbit interaction

Frank Freimuth, Stefan Blügel, and Yuriy Mokrousov

Phys. Rev. B 95, 184428 (2017) - Published 25 May, 2017

Majorana Landau-level Raman spectroscopy

Brent Perreault, Stephan Rachel, F. J. Burnell, and Johannes Knolle

Phys. Rev. B 95, 184429 (2017) - Published 25 May, 2017

Quantum criticality in the coupled two-leg spin ladder Ba2CuTeO6

A. Glamazda, Y. S. Choi, S.-H. Do, S. Lee, P. Lemmens, A. N. Ponomaryov, S. A. Zvyagin, J. Wosnitza, Dita Puspita Sari, I. Watanabe, and K.-Y. Choi

Phys. Rev. B 95, 184430 (2017) - Published 30 May, 2017

Magnetic properties of nanoparticle compacts with controlled broadening of the particle size distribution

M. S. Andersson, R. Mathieu, P. S. Normile, S. S. Lee, G. Singh, P. Nordblad, and J. A. De Toro

Phys. Rev. B 95, 184431 (2017) - Published 30 May, 2017

Extended spin model in atomistic simulations of alloys

Fan Pan, Jonathan Chico, Anna Delin, Anders Bergman, and Lars Bergqvist

Phys. Rev. B 95, 184432 (2017) - Published 30 May, 2017

Insight into the temperature dependent properties of the ferromagnetic Kondo lattice YbNiSn

A. Generalov, D. A. Sokolov, A. Chikina, Yu. Kucherenko, V. N. Antonov, L. V. Bekenov, S. Patil, A. D. Huxley, J. W. Allen, K. Matho, K. Kummer, D. V. Vyalikh, and C. Laubschat

Phys. Rev. B 95, 184433 (2017) - Published 30 May, 2017

Universal depinning transition of domain walls in ultrathin ferromagnets

R. Diaz Pardo, W. Savero Torres, A. B. Kolton, S. Bustingorry, and V. Jeudy

Phys. Rev. B 95, 184434 (2017) - Published 30 May, 2017

Magnetoelectric excitations in multiferroic Ni3TeO6

Stella Skiadopoulou, Fedir Borodavka, Christelle Kadlec, Filip Kadlec, Maria Retuerto, Zheng Deng, Martha Greenblatt, and Stanislav Kamba

Phys. Rev. B 95, 184435 (2017) - Published 30 May, 2017

Field dependence of the magnetic correlations of the frustrated magnet SrDy2O4

N. Gauthier, A. Fennell, B. Prévost, A. Désilets-Benoit, H. A. Dabkowska, O. Zaharko, M. Frontzek, R. Sibille, A. D. Bianchi, and M. Kenzelmann

Phys. Rev. B 95, 184436 (2017) - Published 30 May, 2017

Enhancement of the spin Peltier effect in multilayers

K. Uchida, R. Iguchi, S. Daimon, R. Ramos, A. Anadón, I. Lucas, P. A. Algarabel, L. Morellón, M. H. Aguirre, M. R. Ibarra, and E. Saitoh

Phys. Rev. B 95, 184437 (2017) - Published 30 May, 2017

Frustrated magnetism and caloric effects in Mn-based antiperovskite nitrides: Ab initio theory

J. Zemen, E. Mendive-Tapia, Z. Gercsi, R. Banerjee, J. B. Staunton, and K. G. Sandeman

Phys. Rev. B 95, 184438 (2017) - Published 31 May, 2017

Superfluidity and superconductivity

Nodeless superconductivity and the peak effect in the quasiskutterudites Lu3Os4Ge13 and Y3Ru4Ge13

Z. F. Weng, M. Smidman, G. M. Pang, O. Prakash, Y. Chen, Y. J. Zhang, S. Ramakrishnan, and H. Q. Yuan

Phys. Rev. B 95, 184501 (2017) - Published 1 May, 2017

Gradual Fermi-surface modification in orbitally ordered state of FeSe revealed by optical spectroscopy

M. Nakajima, K. Yanase, F. Nabeshima, Y. Imai, A. Maeda, and S. Tajima

Phys. Rev. B 95, 184502 (2017) - Published 1 May, 2017

Evolution of T2 resistivity and superconductivity in Nb3Sn under pressure

Z. Ren, L. Gamperle, A. Fete, C. Senatore, and D. Jaccard

Phys. Rev. B 95, 184503 (2017) - Published 1 May, 2017

Normal state above the upper critical field in Fe1+yTe1−x(Se,S)x

Aifeng Wang (王爱峰), Erik Kampert, H. Saadaoui, H. Luetkens, Rongwei Hu (胡荣伟), E. Morenzoni, J. Wosnitza, and C. Petrovic

Phys. Rev. B 95, 184504 (2017) - Published 3 May, 2017

Study of in-plane electrical transport anisotropy of a-axis oriented YBa2Cu3O7−δ nanodevices

Reza Baghdadi, Riccardo Arpaia, Evgeny Stepantsov, Marco Arzeo, Dmitri Golubev, Domenico Montemurro, Eric Andersson, Thilo Bauch, and Floriana Lombardi

Phys. Rev. B 95, 184505 (2017) - Published 4 May, 2017

Odd-frequency superconductivity in a nanowire coupled to Majorana zero modes

Shu-Ping Lee, Roman M. Lutchyn, and Joseph Maciejko

Phys. Rev. B 95, 184506 (2017) - Published 8 May, 2017

Here, the authors argue that the recent experimental discovery of Majorana zero modes in topological superconductors may be the key to realizing an elusive state of matter, the odd-frequency superconductor, in which Cooper pairing is entirely dynamical in nature. Via an exactly soluble model, it is shown that when Majorana zero modes couple to a spin-polarized metallic system, equal-spin s-wave odd-frequency pairing is generically induced in the spin-polarized metal. The key properties of odd-frequency superconductivity, such as a vanishing static superconducting order parameter and a paramagnetic Meissner effect, are demonstrated in this system by explicit calculations.

Robustness of a quasiparticle interference test for sign-changing gaps in multiband superconductors

Johannes H. J. Martiny, Andreas Kreisel, P. J. Hirschfeld, and Brian M. Andersen

Phys. Rev. B 95, 184507 (2017) - Published 9 May, 2017

Anomalous current in diffusive ferromagnetic Josephson junctions

M. A. Silaev, I. V. Tokatly, and F. S. Bergeret

Phys. Rev. B 95, 184508 (2017) - Published 10 May, 2017

Anti-Lenz supercurrents in superconducting spin valves

U. D. Chacón Hernández, M. B. Fontes, E. Baggio-Saitovitch, M. A. Sousa, and C. Enderlein

Phys. Rev. B 95, 184509 (2017) - Published 11 May, 2017

Local and nonlocal energy spectra of superfluid He3 turbulence

L. Biferale, D. Khomenko, V. L'vov, A. Pomyalov, I. Procaccia, and G. Sahoo

Phys. Rev. B 95, 184510 (2017) - Published 16 May, 2017

Disorder robustness and protection of Majorana bound states in ferromagnetic chains on conventional superconductors

Oladunjoye A. Awoga, Kristofer Björnson, and Annica M. Black-Schaffer

Phys. Rev. B 95, 184511 (2017) - Published 17 May, 2017

Engineering one-dimensional topological phases on p-wave superconductors

Isac Sahlberg, Alex Westström, Kim Pöyhönen, and Teemu Ojanen

Phys. Rev. B 95, 184512 (2017) - Published 18 May, 2017

Universality and unconventional enhancement of flux-flow resistivity in Ba(Fe1−xCox)2As2

X. Y. Huang, D. J. Haney, Y. P. Singh, T. Hu, H. Xiao, Hai-Hu Wen, M. Dzero, and C. C. Almasan

Phys. Rev. B 95, 184513 (2017) - Published 22 May, 2017

Superconductivity in noncentrosymmetric Ag2Pd3S

H. Yoshida, H. Okabe, Y. Matsushita, M. Isobe, and E. Takayama-Muromachi

Phys. Rev. B 95, 184514 (2017) - Published 22 May, 2017

Spontaneous finite momentum pairing in superconductors without inversion symmetry

Aviram Steinbok and Karen Michaeli

Phys. Rev. B 95, 184515 (2017) - Published 24 May, 2017

Is BaCr2As2 symmetrical to BaFe2As2 with respect to half 3d shell filling?

P. Richard, A. van Roekeghem, B. Q. Lv, Tian Qian, T. K. Kim, M. Hoesch, J.-P. Hu, Athena S. Sefat, Silke Biermann, and H. Ding

Phys. Rev. B 95, 184516 (2017) - Published 25 May, 2017

Pinning effects on self-heating and flux-flow instability in superconducting films near Tc

Valerij A. Shklovskij, Anastasiia P. Nazipova, and Oleksandr V. Dobrovolskiy

Phys. Rev. B 95, 184517 (2017) - Published 25 May, 2017

Quasiclassical theory of magnetoelectric effects in superconducting heterostructures in the presence of spin-orbit coupling

I. V. Bobkova and A. M. Bobkov

Phys. Rev. B 95, 184518 (2017) - Published 25 May, 2017

Fragmented-condensate solid of dipolar excitons

S. V. Andreev

Phys. Rev. B 95, 184519 (2017) - Published 26 May, 2017

Superconducting correlations induced by charge ordering in cuprate superconductors and Fermi-arc formation

E. V. L. de Mello and J. E. Sonier

Phys. Rev. B 95, 184520 (2017) - Published 30 May, 2017

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation