Volume 97, Issue 18

1 May 2018

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HIGHLIGHTED ARTICLES

FEATURED IN PHYSICS

EDITORS' SUGGESTION

${}^{31}P$ NMR study of discrete time-crystalline signatures in an ordered crystal of ammonium dihydrogen phosphate

Jared Rovny, Robert L. Blum, and Sean E. Barrett

Phys. Rev. B 97, 184301 (2018) - Published 1 May, 2018

Periodic driving of an interacting spin system may lead to unusual out-of-equilibrium states of matter, such as the discrete time crystal (DTC). Two recent experiments have reported a key signature of the DTC: for long enough interaction times, the system’s response becomes rigidly locked to one half of the driving frequency. Using nuclear magnetic resonance, the authors observe this DTC signature in the most unexpected system to date: a three-dimensional, spatially ordered crystal. This challenges the paradigm that the DTC arises from many-body localization. Furthermore, hidden coherence in the system is revealed by the “DTC echo” experiment, and the effect of interactions during drive pulses is demonstrated.

EDITORS' SUGGESTION

RAPID COMMUNICATION

Three-dimensional superconducting gap in FeSe from angle-resolved photoemission spectroscopy

Y. S. Kushnirenko, A. V. Fedorov, E. Haubold, S. Thirupathaiah, T. Wolf, S. Aswartham, I. Morozov, T. K. Kim, B. Büchner, and S. V. Borisenko

Phys. Rev. B 97, 180501(R) (2018) - Published 2 May, 2018

Detailed knowledge of the gap function in iron-based superconductors is a requisite to identify the mechanism of superconductivity in these materials. Here, the authors present a systematic study of the superconducting gap distribution on the three-dimensional Fermi surfaces of FeSe using synchrotron-based angle-resolved photoemission spectroscopy. The results imply a significant anisotropy of the superconducting gap on all parts of the FeSe Fermi surface not only in-plane, but also as a function of $k_{z}$ . The observed in-plane anisotropy can be qualitatively understood in terms of orbital-selective Cooper pairing and nematicity-induced mixing of $s$ - and $d$ -pairing channels.

EDITORS' SUGGESTION

Efficient nonparametric $n$ -body force fields from machine learning

Aldo Glielmo, Claudio Zeni, and Alessandro De Vita

Phys. Rev. B 97, 184307 (2018) - Published 24 May, 2018

The authors present a scheme to construct classical $n$ -body force fields using Gaussian Process (GP) Regression, appropriately mapped over explicit n-body functions (M-FFs). The procedure is possible, and will yield accurate forces, whenever prior knowledge allows to restrict the interactions to a finite order $n$ , so that the “universal approximator” resolving power of standard GPs or Neural Networks is not needed. Under these conditions, the proposed construction preserves flexibility of training, systematically improvable accuracy, and a clear framework for validation of the underlying machine learning technique. Moreover, the M-FFs are as fast as classical parametrized potentials, since they avoid lengthy summations over database entries or weight parameters.

EDITORS' SUGGESTION

Quantum dynamics in sine-square deformed conformal field theory: Quench from uniform to nonuniform conformal field theory

Xueda Wen and Jie-Qiang Wu

Phys. Rev. B 97, 184309 (2018) - Published 31 May, 2018

Sine-square deformed conformal field theory has received extensive attention in both condensed matter physics and high-energy physics recently. This is due to its unusual properties, such as having a continuous Virasoro algebra. Here, the authors investigate its nonequilibrium dynamics by studying the entanglement evolution after a quantum quench. New physical effects, such as the absence of revivals in entanglement evolution, are observed in both analytical and numerical calculations. This effect could potentially be used when engineering a gapless system with cold atoms, in order to reduce finite-size effects. The work here also sheds new light on the nonequilibrium dynamics of conformal field theory in curved spacetime.

EDITORS' SUGGESTION

Cubic anisotropy in (Ga,Mn)As layers: Experiment and theory

M. Sawicki, O. Proselkov, C. Sliwa, P. Aleshkevych, J. Z. Domagala, J. Sadowski, and T. Dietl

Phys. Rev. B 97, 184403 (2018) - Published 3 May, 2018

The authors observe unreported features of magnetic anisotropy in the dilute ferromagnetic semiconductor (Ga,Mn)As. Magnetization and ferromagnetic resonance studies provide experimental evidence that, in a specific range of temperatures and hole concentrations, the $< 110 >$ in-plane directions become the easy axes of the cubic contribution to magnetic anisotropy in (Ga,Mn)As(001). This result has significant supportive value for the theoretical description of ferromagnetism in (III,Mn)V dilute ferromagnetic semiconductors by the $p$ - $d$ Zener model. However, to provide a comprehensive quantitative account of these findings, incorporation of scattering broadening of the hole density of states, single-ion magnetic anisotropy of Mn, and disorder-driven nonuniformities of the carrier density have to be accomplished.

EDITORS' SUGGESTION

Quantum transport in coupled Majorana box systems

Matthias Gau, Stephan Plugge, and Reinhold Egger

Phys. Rev. B 97, 184506 (2018) - Published 16 May, 2018

Mesoscopic superconducting islands with four or more Majorana zero modes are promising candidates for topological qubits. In recent theoretical proposals, interlinked ensembles of such Majorana boxes are used to establish Majorana code networks that, in principle, can run large-scale quantum computations and quantum error correction. Here, the authors discuss transport through coupled Majorana boxes, developing theoretical approaches in which general networks can be drastically reduced in their complexity. This is followed by a discussion of several examples of recent interest, including an analysis of the so-called loop quit device, which is currently under experimental investigation.

RAPID COMMUNICATIONS

Structure, structural phase transitions, mechanical properties, defects

RAPID COMMUNICATION

Topological node lines in mechanical metacrystals

Zhan Xiong, Hai-Xiao Wang, Hao Ge, Jinjie Shi, Jie Luo, Yun Lai, Ming-Hui Lu, and Jian-Hua Jiang

Phys. Rev. B 97, 180101(R) (2018) - Published 18 May, 2018

RAPID COMMUNICATION

Angle-adjustable density field formulation for the modeling of crystalline microstructure

Zi-Le Wang, Zhirong Liu, and Zhi-Feng Huang

Phys. Rev. B 97, 180102(R) (2018) - Published 25 May, 2018

RAPID COMMUNICATION

Atomic-scale mechanism of internal structural relaxation screening at polar interfaces

Mingqiang Li, Xiaoxing Cheng, Ning Li, Heng-Jui Liu, Yen-Lin Huang, Kaihui Liu, Ying-Hao Chu, Dapeng Yu, Long-Qing Chen, Yuichi Ikuhara, and Peng Gao

Phys. Rev. B 97, 180103(R) (2018) - Published 25 May, 2018

Dynamics, dynamical systems, lattice effects

RAPID COMMUNICATION

Inverse Edelstein effect induced by magnon-phonon coupling

Mingran Xu, Jorge Puebla, Florent Auvray, Bivas Rana, Kouta Kondou, and Yoshichika Otani

Phys. Rev. B 97, 180301(R) (2018) - Published 10 May, 2018

Magnetism

RAPID COMMUNICATION

Magnonic quantum spin Hall state in the zigzag and stripe phases of the antiferromagnetic honeycomb lattice

Ki Hoon Lee, Suk Bum Chung, Kisoo Park, and Je-Geun Park

Phys. Rev. B 97, 180401(R) (2018) - Published 4 May, 2018

RAPID COMMUNICATION

Nonlinear spin susceptibility in topological insulators

Mahroo Shiranzaei, Jonas Fransson, Hosein Cheraghchi, and Fariborz Parhizgar

Phys. Rev. B 97, 180402(R) (2018) - Published 7 May, 2018

RAPID COMMUNICATION

Spin Hartree-Fock approach to studying quantum Heisenberg antiferromagnets in low dimensions

A. Werth, P. Kopietz, and O. Tsyplyatyev

Phys. Rev. B 97, 180403(R) (2018) - Published 8 May, 2018

RAPID COMMUNICATION

Spin nematics next to spin singlets

Yuto Yokoyama and Chisa Hotta

Phys. Rev. B 97, 180404(R) (2018) - Published 16 May, 2018

RAPID COMMUNICATION

Nematicity and magnetism in LaFeAsO single crystals probed by ${}^{75}{As}$ nuclear magnetic resonance

J. M. Ok, S.-H. Baek, D. V. Efremov, R. Kappenberger, S. Aswartham, J. S. Kim, Jeroen van den Brink, and B. Büchner

Phys. Rev. B 97, 180405(R) (2018) - Published 23 May, 2018

Superfluidity and superconductivity

EDITORS' SUGGESTION

RAPID COMMUNICATION

Three-dimensional superconducting gap in FeSe from angle-resolved photoemission spectroscopy

Y. S. Kushnirenko, A. V. Fedorov, E. Haubold, S. Thirupathaiah, T. Wolf, S. Aswartham, I. Morozov, T. K. Kim, B. Büchner, and S. V. Borisenko

Phys. Rev. B 97, 180501(R) (2018) - Published 2 May, 2018

RAPID COMMUNICATION

Landau-Zener transitions for Majorana fermions

Sergei Khlebnikov

Phys. Rev. B 97, 180502(R) (2018) - Published 3 May, 2018

RAPID COMMUNICATION

Emergent high-spin state above 7 GPa in superconducting FeSe

B. W. Lebert, V. Balédent, P. Toulemonde, J. M. Ablett, and J.-P. Rueff

Phys. Rev. B 97, 180503(R) (2018) - Published 4 May, 2018

RAPID COMMUNICATION

Symmetry-protected line nodes and Majorana flat bands in nodal crystalline superconductors

Shingo Kobayashi, Shuntaro Sumita, Youichi Yanase, and Masatoshi Sato

Phys. Rev. B 97, 180504(R) (2018) - Published 11 May, 2018

RAPID COMMUNICATION

Probing individual tunneling fluctuators with coherently controlled tunneling systems

Saskia M. Meißner, Arnold Seiler, Jürgen Lisenfeld, Alexey V. Ustinov, and Georg Weiss

Phys. Rev. B 97, 180505(R) (2018) - Published 25 May, 2018

ARTICLES

Structure, structural phase transitions, mechanical properties, defects

Adaptive strain prompting a pseudo-morphotropic phase boundary in ferroelectric (1- $x) {Na}_{0.5} {Bi}_{0.5} {TiO}_{3} − x {BaTiO}_{3}$

K. Datta, R. B. Neder, A. Richter, M. Göbbels, J. C. Neuefeind, and B. Mihailova

Phys. Rev. B 97, 184101 (2018) - Published 3 May, 2018

Computational findings of metastable ferroelectric phases of squaric acid

Shoji Ishibashi, Sachio Horiuchi, and Reiji Kumai

Phys. Rev. B 97, 184102 (2018) - Published 14 May, 2018

Synthesis of bulk chromium hydrides under pressure of up to 120 GPa

Adrien Marizy, Grégory Geneste, Paul Loubeyre, Bastien Guigue, and Gaston Garbarino

Phys. Rev. B 97, 184103 (2018) - Published 18 May, 2018

High-frequency intrinsic dynamics of the electrocaloric effect from direct atomistic simulations

S. Lisenkov and I. Ponomareva

Phys. Rev. B 97, 184104 (2018) - Published 21 May, 2018

Structural transitions in hybrid improper ferroelectric $C a_{3} T i_{2} O_{7}$ tuned by site-selective isovalent substitutions: A first-principles study

C. F. Li, S. H. Zheng, H. W. Wang, J. J. Gong, X. Li, Y. Zhang, K. L. Yang, L. Lin, Z. B. Yan, Shuai Dong, and J.-M. Liu

Phys. Rev. B 97, 184105 (2018) - Published 23 May, 2018

Mechanochemical formation of heterogeneous diamond structures during rapid uniaxial compression in graphite

Matthew P. Kroonblawd and Nir Goldman

Phys. Rev. B 97, 184106 (2018) - Published 25 May, 2018

Emergence of microstructure and oxygen diffusion in yttrium-stabilized cubic zirconia

C. Yang, K. Trachenko, S. Hull, I. T. Todorov, and M. T. Dove

Phys. Rev. B 97, 184107 (2018) - Published 29 May, 2018

Phonon mode softening and elastic properties of hafnium under pressure

Dmitry Novoselov, V. I. Anisimov, and Yu. S. Ponosov

Phys. Rev. B 97, 184108 (2018) - Published 30 May, 2018

Dipole-dipole interactions and incommensurate order in perovskite structures

R. G. Burkovsky

Phys. Rev. B 97, 184109 (2018) - Published 31 May, 2018

Inhomogeneous, disordered, and partially ordered systems

Valley-controlled propagation of pseudospin states in bulk metacrystal waveguides

Xiao-Dong Chen, Wei-Min Deng, Jin-Cheng Lu, and Jian-Wen Dong

Phys. Rev. B 97, 184201 (2018) - Published 1 May, 2018

Small-angle x-ray scattering in amorphous silicon: A computational study

Durga Paudel, Raymond Atta-Fynn, David A. Drabold, Stephen R. Elliott, and Parthapratim Biswas

Phys. Rev. B 97, 184202 (2018) - Published 2 May, 2018

Localized-to-extended-states transition below the Fermi level

M. A. Tito and Yu. A. Pusep

Phys. Rev. B 97, 184203 (2018) - Published 7 May, 2018

Two-dimensional plasmons in the random impedance network model of disordered thin film nanocomposites

N. A. Olekhno and Y. M. Beltukov

Phys. Rev. B 97, 184204 (2018) - Published 14 May, 2018

Mott glass from localization and confinement

Yang-Zhi Chou, Rahul M. Nandkishore, and Leo Radzihovsky

Phys. Rev. B 97, 184205 (2018) - Published 21 May, 2018

Dynamics, dynamical systems, lattice effects

FEATURED IN PHYSICS

EDITORS' SUGGESTION

${}^{31}P$ NMR study of discrete time-crystalline signatures in an ordered crystal of ammonium dihydrogen phosphate

Jared Rovny, Robert L. Blum, and Sean E. Barrett

Phys. Rev. B 97, 184301 (2018) - Published 1 May, 2018

Controlling dynamical quantum phase transitions

D. M. Kennes, D. Schuricht, and C. Karrasch

Phys. Rev. B 97, 184302 (2018) - Published 10 May, 2018

Theory of magnetoelastic resonance in a monoaxial chiral helimagnet

A. A. Tereshchenko, A. S. Ovchinnikov, Igor Proskurin, E. V. Sinitsyn, and Jun-ichiro Kishine

Phys. Rev. B 97, 184303 (2018) - Published 10 May, 2018

Efficient excitation of nonlinear phonons via chirped pulses: Induced structural phase transitions

A. P. Itin and M. I. Katsnelson

Phys. Rev. B 97, 184304 (2018) - Published 14 May, 2018

Revisiting PbTe to identify how thermal conductivity is really limited

Shenghong Ju, Takuma Shiga, Lei Feng, and Junichiro Shiomi

Phys. Rev. B 97, 184305 (2018) - Published 14 May, 2018

Electric control of the heat flux through electrophononic effects

Juan Antonio Seijas-Bellido, Hugo Aramberri, Jorge Íñiguez, and Riccardo Rurali

Phys. Rev. B 97, 184306 (2018) - Published 18 May, 2018

EDITORS' SUGGESTION

Efficient nonparametric $n$ -body force fields from machine learning

Aldo Glielmo, Claudio Zeni, and Alessandro De Vita

Phys. Rev. B 97, 184307 (2018) - Published 24 May, 2018

Exact results for the Floquet coin toss for driven integrable models

Utso Bhattacharya, Somnath Maity, Uddipan Banik, and Amit Dutta

Phys. Rev. B 97, 184308 (2018) - Published 25 May, 2018

EDITORS' SUGGESTION

Quantum dynamics in sine-square deformed conformal field theory: Quench from uniform to nonuniform conformal field theory

Xueda Wen and Jie-Qiang Wu

Phys. Rev. B 97, 184309 (2018) - Published 31 May, 2018

Magnetism

Using first-principles calculations to screen for fragile magnetism: Case study of ${LaCrGe}_{3}$ and ${LaCrSb}_{3}$

Manh Cuong Nguyen, Valentin Taufour, Sergey L. Bud'ko, Paul C. Canfield, Vladimir P. Antropov, Cai-Zhuang Wang, and Kai-Ming Ho

Phys. Rev. B 97, 184401 (2018) - Published 2 May, 2018

Magnetic droplet soliton nucleation in oblique fields

Morteza Mohseni, M. Hamdi, H. F. Yazdi, S. A. H. Banuazizi, S. Chung, S. R. Sani, Johan Åkerman, and Majid Mohseni

Phys. Rev. B 97, 184402 (2018) - Published 2 May, 2018

EDITORS' SUGGESTION

Cubic anisotropy in (Ga,Mn)As layers: Experiment and theory

M. Sawicki, O. Proselkov, C. Sliwa, P. Aleshkevych, J. Z. Domagala, J. Sadowski, and T. Dietl

Phys. Rev. B 97, 184403 (2018) - Published 3 May, 2018

Electronic structure, magnetism, and exchange integrals in transition-metal oxides: Role of the spin polarization of the functional in DFT+ $U$ calculations

Samara Keshavarz, Johan Schött, Andrew J. Millis, and Yaroslav O. Kvashnin

Phys. Rev. B 97, 184404 (2018) - Published 3 May, 2018

Evidence for a pressure-induced spin transition in olivine-type ${LiFePO}_{4}$ triphylite

Maribel Núñez Valdez, Ilias Efthimiopoulos, Michail Taran, Jan Müller, Elena Bykova, Catherine McCammon, Monika Koch-Müller, and Max Wilke

Phys. Rev. B 97, 184405 (2018) - Published 3 May, 2018

Dielectric magnetic microparticles as photomagnonic cavities: Enhancing the modulation of near-infrared light by spin waves

Evangelos Almpanis

Phys. Rev. B 97, 184406 (2018) - Published 3 May, 2018

Canted ferrimagnetism and giant coercivity in the nonstoichiometric double perovskite $L a_{2} N i_{1.19} O s_{0.81} O_{6}$

Hai L. Feng, Manfred Reehuis, Peter Adler, Zhiwei Hu, Michael Nicklas, Andreas Hoser, Shih-Chang Weng, Claudia Felser, and Martin Jansen

Phys. Rev. B 97, 184407 (2018) - Published 7 May, 2018

Phase dynamics of oscillating magnetizations coupled via spin pumping

Tomohiro Taniguchi

Phys. Rev. B 97, 184408 (2018) - Published 7 May, 2018

Thermodynamic properties of the $S = 1 / 2$ twisted triangular spin tube

Takuya Ito, Chihiro Iino, and Naokazu Shibata

Phys. Rev. B 97, 184409 (2018) - Published 7 May, 2018

Theoretical proposal for determining angular momentum compensation in ferrimagnets

Zhifeng Zhu, Xuanyao Fong, and Gengchiau Liang

Phys. Rev. B 97, 184410 (2018) - Published 7 May, 2018

Room-temperature $d^{0}$ ferromagnetism in carbon-doped $Y_{2} O_{3}$ for spintronic applications: A density functional theory study

Brahmananda Chakraborty, Prithwish K. Nandi, Yoshiyuki Kawazoe, and Lavanya M. Ramaniah

Phys. Rev. B 97, 184411 (2018) - Published 7 May, 2018

Crystal-field effects in the kagome antiferromagnet ${Ho}_{3} {Ru}_{4} {Al}_{12}$

D. I. Gorbunov, T. Nomura, I. Ishii, M. S. Henriques, A. V. Andreev, M. Doerr, T. Stöter, T. Suzuki, S. Zherlitsyn, and J. Wosnitza

Phys. Rev. B 97, 184412 (2018) - Published 8 May, 2018

Finite-temperature behavior of a classical spin-orbit-coupled model for ${YbMgGaO}_{4}$ with and without bond disorder

Edward Parker and Leon Balents

Phys. Rev. B 97, 184413 (2018) - Published 9 May, 2018

Element-specific observation of the ferromagnetic ordering process in UCoAl via soft x-ray magnetic circular dichroism

Yukiharu Takeda, Yuji Saitoh, Tetsuo Okane, Hiroshi Yamagami, Tatsuma D. Matsuda, Etsuji Yamamoto, Yoshinori Haga, and Yoshichika Ōnuki

Phys. Rev. B 97, 184414 (2018) - Published 10 May, 2018

Bimeron nanoconfined design

I. A. Iakovlev, O. M. Sotnikov, and V. V. Mazurenko

Phys. Rev. B 97, 184415 (2018) - Published 11 May, 2018

Experimental determination of exchange constants in antiferromagnetic ${Mn}_{2} Au$

A. A. Sapozhnik, C. Luo, H. Ryll, F. Radu, M. Jourdan, H. Zabel, and Hans-Joachim Elmers

Phys. Rev. B 97, 184416 (2018) - Published 11 May, 2018

Appearance of the octupole ordered phase IV in ${Ce}_{x} {La}_{1 - x} B_{6}$

M. Sera, K. Kunimori, T. Matsumura, A. Kondo, H. Tanida, H. Tou, and F. Iga

Phys. Rev. B 97, 184417 (2018) - Published 14 May, 2018

Driving chiral domain walls in antiferromagnets using rotating magnetic fields

Keming Pan, Lingdi Xing, H. Y. Yuan, and Weiwei Wang

Phys. Rev. B 97, 184418 (2018) - Published 15 May, 2018

Magnetic ground state of the multiferroic hexagonal $LuFe O_{3}$

Pittala Suresh, K. Vijaya Laxmi, A. K. Bera, S. M. Yusuf, Bheema Lingam Chittari, Jeil Jung, and P. S. Anil Kumar

Phys. Rev. B 97, 184419 (2018) - Published 15 May, 2018

Complex temperature dependence of coupling and dissipation of cavity magnon polaritons from millikelvin to room temperature

Isabella Boventer, Marco Pfirrmann, Julius Krause, Yannick Schön, Mathias Kläui, and Martin Weides

Phys. Rev. B 97, 184420 (2018) - Published 16 May, 2018

Quantum phase diagram of spin-1 $J_{1} − J_{2}$ Heisenberg model on the square lattice: An infinite projected entangled-pair state and density matrix renormalization group study

R. Haghshenas, Wang-Wei Lan, Shou-Shu Gong, and D. N. Sheng

Phys. Rev. B 97, 184436 (2018) - Published 31 May, 2018

EDITORS' SUGGESTION

Fully gapped spin-singlet superconductivity in noncentrosymmetric ${PbTaSe}_{2}$ : ${}^{207}{Pb}$ nuclear magnetic resonance study

S. Maeda, K. Matano, and Guo-qing Zheng

Phys. Rev. B 97, 184510 (2018) - Published 21 May, 2018