Volume 99, Issue 22

1 June 2019

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HIGHLIGHTED ARTICLES

EDITORS' SUGGESTION

RAPID COMMUNICATION

Discrete time quasicrystals

Krzysztof Giergiel, Arkadiusz Kuroś, and Krzysztof Sacha

Phys. Rev. B 99, 220303(R) (2019) - Published 11 June, 2019

Periodically driven quantum many-body systems can spontaneously reorganize their motion and start moving with a period different than the driving period. These are “discrete time crystals” and they have been realized already in the laboratory. It turns out that systems from the same class can spontaneously reveal quasicrystalline structures in time. The interaction between the particles forces them into a quasicrystal pattern in the time domain, in spite of the fact that the driving is periodic.

EDITORS' SUGGESTION

RAPID COMMUNICATION

Vortex-induced quantum metallicity in the mono-unit-layer superconductor $NbS e_{2}$

Satoru Ichinokura, Yuki Nakata, Katsuaki Sugawara, Yukihiro Endo, Akari Takayama, Takashi Takahashi, and Shuji Hasegawa

Phys. Rev. B 99, 220501(R) (2019) - Published 5 June, 2019

The authors investigate quantum phase transitions in single unit-layer NbSe $_{2}$ . The superconductor–normal state transition caused by the surface-normal magnetic field is found to be intermediated by a quasimetallic state. This behavior is consistent with the “Bose metal” picture, in which finite dissipation is caused by the breaking of phase coherence due to the strong gauge-field fluctuation. The results of scaling analyses reveal a complex but essential phase diagram of single unit-layer NbSe $_{2}$ as a two-dimensional superconductor.

EDITORS' SUGGESTION

Comprehensive magnetic phase diagrams of the polar metal $C a_{3} {(R u_{0.95} F e_{0.05})}_{2} O_{7}$

Shiming Lei, Shalinee Chikara, Danilo Puggioni, Jin Peng, Mengze Zhu, Mingqiang Gu, Weiwei Zhao, Yu Wang, Yakun Yuan, Hirofumi Akamatsu, Moses H. W. Chan, Xianglin Ke, Zhiqiang Mao, James M. Rondinelli, Marcelo Jaime, John Singleton, Franziska Weickert, Vivien S. Zapf, and Venkatraman Gopalan

Phys. Rev. B 99, 224411 (2019) - Published 10 June, 2019

The authors report on comprehensive magnetic phase diagrams of the novel magnetic polar metal Ca $_{3}$ (Ru $_{0.95}$ Fe $_{0.05}$ ) $_{2}$ O $_{7}$ . The small amount of Fe acts like a “magnetic softener”, resulting in incommensurate spin order, in contrast to the collinear magnetic order seen in pure Ca $_{3}$ Ru $_{2}$ O $_{7}$ . The authors show that the complex magnetic order is extremely sensitive to magnetic field and that Ca $_{3}$ (Ru $_{0.95}$ Fe $_{0.05}$ ) $_{2}$ O $_{7}$ can exhibit a net ferromagnetic moment.

EDITORS' SUGGESTION

Chemical composition induced quantum phase transition in ${Cs}_{1 - x} {Rb}_{x} {FeCl}_{3}$

S. Hayashida, L. Stoppel, Z. Yan, S. Gvasaliya, A. Podlesnyak, and A. Zheludev

Phys. Rev. B 99, 224420 (2019) - Published 17 June, 2019

Much of what we know about quantum criticality comes from studies of quantum phase transitions between paramagnetic and magnetically ordered phases. These are usually driven by magnetic field or pressure. Here, the authors report that in CsFeCl $_{3}$ , one of the precious few materials exhibiting pressure-induced magnetic order, a similar transition can also be induced by chemical substitution. Cs $_{1 - x}$ Rb $_{x}$ FeCl $_{3}$ continuously evolves from a gapped quantum paramagnet to a critical gapless state and finally to magnetic long-range order. No bulky pressure cells are required, which makes all thermodynamic and spectroscopic properties easily accessible to measurement.

EDITORS' SUGGESTION

Order and disorder in the magnetization of the chiral crystal ${CrNb}_{3} S_{6}$

Gary W. Paterson, Tsukasa Koyama, Misako Shinozaki, Yusuke Masaki, Francisco J. T. Goncalves, Yusuke Shimamoto, Tadayuki Sogo, Magnus Nord, Yusuke Kousaka, Yusuke Kato, Stephen McVitie, and Yoshihiko Togawa

Phys. Rev. B 99, 224429 (2019) - Published 26 June, 2019

Nanoscale spin solitons in CrNb $_{3}$ S $_{6}$ are notable for their macroscale coherence, creating an ordered chiral soliton lattice (CSL) that may be tuned by the application of a magnetic field. Through studying experimentally the transitions between the CSL and field-polarized phases, this work shows the existence of a hysteretic disordered phase and reveals the importance of CSL dislocations in mediating the transitions. Gaining control and understanding of dislocations may lead to configurable nanochannels of field-polarized spins, suitable for the propagation of spin waves.

EDITORS' SUGGESTION

Magnetoelastic excitation spectrum in the rare-earth pyrochlore ${Tb}_{2} {Ti}_{2} O_{7}$

M. Ruminy, S. Guitteny, J. Robert, L.-P. Regnault, M. Boehm, P. Steffens, H. Mutka, J. Ollivier, U. Stuhr, J. S. White, B. Roessli, L. Bovo, C. Decorse, M. K. Haas, R. J. Cava, I. Mirebeau, M. Kenzelmann, S. Petit, and T. Fennell

Phys. Rev. B 99, 224431 (2019) - Published 28 June, 2019

Amongst the rare earth pyrochlores, Tb $_{2}$ Ti $_{2}$ O $_{7}$ remains mysterious: no theory of purely magnetic degrees of freedom can account entirely for its behavior. The discovery of a hybrid magnetoelastic excitation, formed from crystal field and phonon excitations, suggests that spin-lattice coupling may play an important role. Here, the authors use inelastic neutron scattering to make a detailed investigation of the hybrid mode and crystal field excitons that may hold the key to understanding the microscopic interactions of Tb $_{2}$ Ti $_{2}$ O $_{7}$ .

EDITORS' SUGGESTION

Nonlinear electromagnetic response and Higgs-mode excitation in BCS superconductors with impurities

Mikhail Silaev

Phys. Rev. B 99, 224511 (2019) - Published 18 June, 2019

Recently, light-induced excitation of Higgs modes, i.e., oscillations of the order-parameter amplitude in superconductors, has been observed. The mechanism of this effect has remained not fully understood. In the absence of relaxation processes, the order-parameter amplitude is not affected by the irradiation, since the systems of quasiparticle excitations and Cooper pairs move together and remain in equilibrium with each other. This work demonstrates how the relaxation of quasiparticles by impurity scattering leads to finite coupling between the Higgs mode and light. The suggested theory can be used to study light-matter interaction in anisotropic and multiband superconductors, such as high-temperature cuprates, iron pnictides, and magnesium diboride.

RAPID COMMUNICATIONS

Structure, structural phase transitions, mechanical properties, defects

RAPID COMMUNICATION

Reactivity of lithium and platinum at elevated densities

Jack Binns, Miriam Marqués, Philip Dalladay-Simpson, Robin Turnbull, Mungo Frost, Eugene Gregoryanz, and Ross T. Howie

Phys. Rev. B 99, 220101(R) (2019) - Published 10 June, 2019

RAPID COMMUNICATION

Flat lensing by graded line meta-arrays

Gregory J. Chaplain and Richard V. Craster

Phys. Rev. B 99, 220102(R) (2019) - Published 24 June, 2019

Inhomogeneous, disordered, and partially ordered systems

RAPID COMMUNICATION

Exact solution of a percolation analog for the many-body localization transition

Sthitadhi Roy, David E. Logan, and J. T. Chalker

Phys. Rev. B 99, 220201(R) (2019) - Published 27 June, 2019

Dynamics, dynamical systems, lattice effects

RAPID COMMUNICATION

Active Willis metamaterials for ultracompact nonreciprocal linear acoustic devices

Yuxin Zhai, Hyung-Suk Kwon, and Bogdan-Ioan Popa

Phys. Rev. B 99, 220301(R) (2019) - Published 3 June, 2019

RAPID COMMUNICATION

Optical control of vibrational coherence triggered by an ultrafast phase transition

M. J. Neugebauer, T. Huber, M. Savoini, E. Abreu, V. Esposito, M. Kubli, L. Rettig, E. Bothschafter, S. Grübel, T. Kubacka, J. Rittmann, G. Ingold, P. Beaud, D. Dominko, J. Demsar, and S. L. Johnson

Phys. Rev. B 99, 220302(R) (2019) - Published 7 June, 2019

EDITORS' SUGGESTION

RAPID COMMUNICATION

Discrete time quasicrystals

Krzysztof Giergiel, Arkadiusz Kuroś, and Krzysztof Sacha

Phys. Rev. B 99, 220303(R) (2019) - Published 11 June, 2019

RAPID COMMUNICATION

Multiphonon anharmonicity of MgO

Paola Giura, Lorenzo Paulatto, Fei He, Ricardo P. S. M. Lobo, Alexei Bosak, Eugenio Calandrini, Luigi Paolasini, and Daniele Antonangeli

Phys. Rev. B 99, 220304(R) (2019) - Published 19 June, 2019

Magnetism

RAPID COMMUNICATION

Theoretical prediction of Weyl fermions in the paramagnetic electride $Y_{2} C$

Liangliang Liu, Chongze Wang, Seho Yi, Dou Kyun Kim, Chul Hong Park, and Jun-Hyung Cho

Phys. Rev. B 99, 220401(R) (2019) - Published 6 June, 2019

RAPID COMMUNICATION

Incoherent spin pumping from YIG single crystals

Y. S. Chen, J. G. Lin, S. Y. Huang, and C. L. Chien

Phys. Rev. B 99, 220402(R) (2019) - Published 12 June, 2019

RAPID COMMUNICATION

Empirical way for finding new uranium-based heavy-fermion materials

E. Svanidze, A. Amon, R. Borth, Y. Prots, M. Schmidt, M. Nicklas, A. Leithe-Jasper, and Yu. Grin

Phys. Rev. B 99, 220403(R) (2019) - Published 17 June, 2019

RAPID COMMUNICATION

Two-dimensional ordering and collective magnetic excitations in the dilute ferromagnetic topological insulator ${({Bi}_{0.95} {Mn}_{0.05})}_{2} {Te}_{3}$

David Vaknin, Daniel M. Pajerowski, Deborah L. Schlagel, Kevin W. Dennis, and Robert J. McQueeney

Phys. Rev. B 99, 220404(R) (2019) - Published 21 June, 2019

RAPID COMMUNICATION

Intrinsic spin currents in ferromagnets

V. P. Amin, Junwen Li, M. D. Stiles, and P. M. Haney

Phys. Rev. B 99, 220405(R) (2019) - Published 24 June, 2019

RAPID COMMUNICATION

Itinerant ferromagnetism in $p$ -doped monolayers of ${MoS}_{2}$

Yuqiang Gao, Nirmal Ganguli, and Paul J. Kelly

Phys. Rev. B 99, 220406(R) (2019) - Published 24 June, 2019

Superfluidity and superconductivity

EDITORS' SUGGESTION

RAPID COMMUNICATION

Vortex-induced quantum metallicity in the mono-unit-layer superconductor $NbS e_{2}$

Satoru Ichinokura, Yuki Nakata, Katsuaki Sugawara, Yukihiro Endo, Akari Takayama, Takashi Takahashi, and Shuji Hasegawa

Phys. Rev. B 99, 220501(R) (2019) - Published 5 June, 2019

RAPID COMMUNICATION

Superconductivity in sodalite-like yttrium hydride clathrates

Christoph Heil, Simone di Cataldo, Giovanni B. Bachelet, and Lilia Boeri

Phys. Rev. B 99, 220502(R) (2019) - Published 10 June, 2019

RAPID COMMUNICATION

Superconductivity in the van der Waals layered compound ${PS}_{2}$

Yan-Ling Li, Elissaios Stavrou, Qiang Zhu, Samantha M. Clarke, Yunguo Li, and Hong-Mei Huang

Phys. Rev. B 99, 220503(R) (2019) - Published 10 June, 2019

RAPID COMMUNICATION

Broadband microwave spectroscopy of semiconductor nanowire-based Cooper-pair transistors

Alex Proutski, Dominique Laroche, Bas van 't Hooft, Peter Krogstrup, Jesper Nygård, Leo P. Kouwenhoven, and Attila Geresdi

Phys. Rev. B 99, 220504(R) (2019) - Published 10 June, 2019

RAPID COMMUNICATION

Quantum dynamics of hydrogen in the iron-based superconductor ${LaFeAsO}_{0.9} D_{0.1}$ measured with inelastic neutron spectroscopy

Jun-ichi Yamaura, Haruhiro Hiraka, Soshi Iimura, Yoshinori Muraba, Joonho Bang, Kazuhiko Ikeuchi, Mitsutaka Nakamura, Yasuhiro Inamura, Takashi Honda, Masatoshi Hiraishi, Kenji M. Kojima, Ryosuke Kadono, Yoshio Kuramoto, Youichi Murakami, Satoru Matsuishi, and Hideo Hosono

Phys. Rev. B 99, 220505(R) (2019) - Published 13 June, 2019

RAPID COMMUNICATION

Topological superconductivity in planar Josephson junctions: Narrowing down to the nanowire limit

F. Setiawan, Ady Stern, and Erez Berg

Phys. Rev. B 99, 220506(R) (2019) - Published 25 June, 2019

RAPID COMMUNICATION

Identification of superconducting pairing symmetry in twisted bilayer graphene using in-plane magnetic field and strain

Fengcheng Wu and Sankar Das Sarma

Phys. Rev. B 99, 220507(R) (2019) - Published 25 June, 2019

RAPID COMMUNICATION

Antichiral and nematicity-wave superconductivity

Mats Barkman, Alexander A. Zyuzin, and Egor Babaev

Phys. Rev. B 99, 220508(R) (2019) - Published 27 June, 2019

ARTICLES

Structure, structural phase transitions, mechanical properties, defects

Scale-invariant avalanche dynamics in the temperature-driven martensitic transition of a Cu-Al-Be single crystal

Francisco Javier Romero, José-María Martín-Olalla, María Carmen Gallardo, Daniel Soto-Parra, Ekhard K. H. Salje, Eduard Vives, and Antoni Planes

Phys. Rev. B 99, 224101 (2019) - Published 20 June, 2019

Elastic anisotropy and single-crystal moduli of solid argon up to 64 GPa from time-domain Brillouin scattering

Samuel Raetz, Maju Kuriakose, Philippe Djemia, Sergey M. Nikitin, Nikolay Chigarev, Vincent Tournat, Alain Bulou, Alexey Lomonosov, Vitalyi E. Gusev, and Andreas Zerr

Phys. Rev. B 99, 224102 (2019) - Published 20 June, 2019

First-principles prediction of switchable metallic ferroelectricity in multiferroic tunnel junctions

L. N. Jiang, W. Z. Chen, B. S. Yang, X.-G. Zhang, Yun-Peng Wang, and X. F. Han

Phys. Rev. B 99, 224103 (2019) - Published 25 June, 2019

Subwavelength multiple topological interface states in one-dimensional labyrinthine acoustic metamaterials

Zhiwang Zhang, Ying Cheng, Xiaojun Liu, and Johan Christensen

Phys. Rev. B 99, 224104 (2019) - Published 26 June, 2019

Nature of the structural symmetries associated with hybrid improper ferroelectricity in $C a_{3} X_{2} O_{7} (X = Mn and Ti)$

S. Liu, H. Zhang, S. Ghose, M. Balasubramanian, Zhenxian Liu, S. G. Wang, Y.-S. Chen, B. Gao, Jaewook Kim, S.-W. Cheong, and T. A. Tyson

Phys. Rev. B 99, 224105 (2019) - Published 27 June, 2019

Inhomogeneous, disordered, and partially ordered systems

Helical transport in coupled resonator waveguides

JungYun Han, Clemens Gneiting, and Daniel Leykam

Phys. Rev. B 99, 224201 (2019) - Published 4 June, 2019

Energy level dynamics across the many-body localization transition

Artur Maksymov, Piotr Sierant, and Jakub Zakrzewski

Phys. Rev. B 99, 224202 (2019) - Published 6 June, 2019

Many-body localization in the presence of long-range interactions and long-range hopping

Sabyasachi Nag and Arti Garg

Phys. Rev. B 99, 224203 (2019) - Published 7 June, 2019

Transport, multifractality, and the breakdown of single-parameter scaling at the localization transition in quasiperiodic systems

Jagannath Sutradhar, Subroto Mukerjee, Rahul Pandit, and Sumilan Banerjee

Phys. Rev. B 99, 224204 (2019) - Published 18 June, 2019

Renormalization-group study of the many-body localization transition in one dimension

Alan Morningstar and David A. Huse

Phys. Rev. B 99, 224205 (2019) - Published 21 June, 2019

Relaxation dynamics induced in glasses by absorption of hard x-ray photons

G. Pintori, G. Baldi, B. Ruta, and G. Monaco

Phys. Rev. B 99, 224206 (2019) - Published 26 June, 2019

Electrical and magnetic properties of thin films of the spin-filter material CrVTiAl

Gregory M. Stephen, Christopher Lane, Gianina Buda, David Graf, Stanislaw Kaprzyk, Bernardo Barbiellini, Arun Bansil, and Don Heiman

Phys. Rev. B 99, 224207 (2019) - Published 28 June, 2019

Robustness of delocalization to the inclusion of soft constraints in long-range random models

P. A. Nosov and I. M. Khaymovich

Phys. Rev. B 99, 224208 (2019) - Published 28 June, 2019

Mobility edge of two interacting particles in three-dimensional random potentials

Filippo Stellin and Giuliano Orso

Phys. Rev. B 99, 224209 (2019) - Published 28 June, 2019

Dynamics, dynamical systems, lattice effects

Incorporating decoherence into solid-state time-dependent density functional theory

Isabella Floss, Christoph Lemell, Kazuhiro Yabana, and Joachim Burgdörfer

Phys. Rev. B 99, 224301 (2019) - Published 3 June, 2019

Mechanism of macroscopic equilibration of isolated quantum systems

Anatoly Dymarsky

Phys. Rev. B 99, 224302 (2019) - Published 6 June, 2019

Nonadiabatic molecular dynamics with decoherence and detailed balance under a density matrix ensemble formalism

Jun Kang and Lin-Wang Wang

Phys. Rev. B 99, 224303 (2019) - Published 10 June, 2019

Lithium diffusion in $L i_{2} X$ ( $X = O$ , S, and Se): Ab initio simulations and inelastic neutron scattering measurements

M. K. Gupta, Baltej Singh, Prabhatasree Goel, R. Mittal, S. Rols, and S. L. Chaplot

Phys. Rev. B 99, 224304 (2019) - Published 10 June, 2019

Universal scrambling in gapless quantum spin chains

Shunsuke Nakamura, Eiki Iyoda, Tetsuo Deguchi, and Takahiro Sagawa

Phys. Rev. B 99, 224305 (2019) - Published 14 June, 2019

Two-stroke optimization scheme for mesoscopic refrigerators

Paul Menczel, Tuomas Pyhäranta, Christian Flindt, and Kay Brandner

Phys. Rev. B 99, 224306 (2019) - Published 21 June, 2019

Unitary-projective entanglement dynamics

Amos Chan, Rahul M. Nandkishore, Michael Pretko, and Graeme Smith

Phys. Rev. B 99, 224307 (2019) - Published 24 June, 2019

Magnetism

Magnetic states of Ni-Mn-Sn based shape memory alloy: A combined muon spin relaxation and neutron diffraction study

J. Sannigrahi, S. Pramanick, S. Chatterjee, J. S. Lord, D. Khalyavin, A. D. Hillier, D. T. Adroja, and S. Majumdar

Phys. Rev. B 99, 224401 (2019) - Published 3 June, 2019

Elementary excitations in the ordered phase of spin- $\frac{1}{2}$ $J_{1}$ – $J_{2}$ model on square lattice

A. V. Syromyatnikov and A. Yu. Aktersky

Phys. Rev. B 99, 224402 (2019) - Published 3 June, 2019

Towards artificial Ising spin glasses: Thermal ordering in randomized arrays of Ising-type nanomagnets

Michael Saccone, Andreas Scholl, Sven Velten, Scott Dhuey, Kevin Hofhuis, Clemens Wuth, Yen-Lin Huang, Zuhuang Chen, Rajesh V. Chopdekar, and Alan Farhan

Phys. Rev. B 99, 224403 (2019) - Published 3 June, 2019

Magnetic structure and high-field magnetization of the distorted kagome lattice antiferromagnet ${Cs}_{2} {Cu}_{3} {SnF}_{12}$

K. Matan, T. Ono, G. Gitgeatpong, K. de Roos, P. Miao, S. Torii, T. Kamiyama, A. Miyata, A. Matsuo, K. Kindo, S. Takeyama, Y. Nambu, P. Piyawongwatthana, T. J. Sato, and H. Tanaka

Phys. Rev. B 99, 224404 (2019) - Published 3 June, 2019