| Volume 106, Issues 21 - 24 December 2022 | | Advertisement  | APS is pleased to announce that Dr. Stephen Nagler of Oak Ridge Laboratory has been selected to succeed Dr. Laurens Molenkamp as Lead Editor of Physical Review B. The transition to Dr. Nagler will be effective as of February 1, 2023. Learn more » | | | | | |
Advertisement | APS is pleased to announce that we have extended our waiver period of all article publication charges (APC) on manuscripts submitted prior to January 1, 2024 and subsequently accepted and published by PRX Energy. We encourage you to take advantage of this promotion and submit your research » | | | | | | Not an APS member? Join today to start connecting with a community of more than 50,000 physicists. | | | | Mark Dykman, Alexander Efros, Bertrand Halperin, Leonid Levitov, and Charles Marcus Phys. Rev. B 106, 210001 (2022) – Published 5 December 2022 | | | Editors' Suggestion Baptiste Vindolet, Marie-Pierre Adam, Loïc Toraille, Mayeul Chipaux, Antoine Hilberer, Géraud Dupuy, Lukas Razinkovas, Audrius Alkauskas, Gergő Thiering, Adam Gali, Mary De Feudis, Midrel Wilfried Ngandeu Ngambou, Jocelyn Achard, Alexandre Tallaire, Martin Schmidt, Christoph Becher, and Jean-François Roch Phys. Rev. B 106, 214109 (2022) – Published 19 December 2022  | The silicon-vacancy (SiV) and germanium-vacancy (GeV) centers in diamond have a sharp photoluminescence with high brightness. In this work, the photoluminescence of these centers is measured up to 180 GPa using nanodiamonds integrated in a diamond anvil cell. The results show blueshifts in the mean emission energy determined by the atomic radii of the impurity. The agreement with ab initio calculations based on the lattice compression of diamond demonstrates the potential of these centers for sensing under extreme pressure conditions. | | | | | | Editors' Suggestion Lucas Winter, Sebastian Großenbach, Ulrich Nowak, and Levente Rózsa Phys. Rev. B 106, 214403 (2022) – Published 5 December 2022  | At very short time scales, inertial effects separate the magnetic moment from the angular momentum, resulting in nutation. Here, it is demonstrated that a resonant excitation of nutation can switch the orientation of the magnetic moments within picoseconds. 90° and 180° switching can be realized in both ferromagnets and antiferromagnets, surpassing the switching speed achievable by any procedure based on spin precession. | | | | | | Editors' Suggestion Mitchell M. Bordelon, Clément Girod, Filip Ronning, Km Rubi, Neil Harrison, Joe D. Thompson, Clarina dela Cruz, Sean M. Thomas, Eric D. Bauer, and Priscila F. S. Rosa Phys. Rev. B 106, 214433 (2022) – Published 26 December 2022  | Typically, exotic quantum phases reside in different materials, but they can coexist given ideal conditions. This underexplored regime is realized in CeLiBi2, which is found to exhibit multiple atypical quantum phases including incommensurate cycloidal magnetic order, hard-axis metamagnetism, large and linear magnetoresistance, and mobile ultralight carriers. These results indicate that CeLiBi2 is an ideal material to experimentally and theoretically explore simultaneous quantum phenomena and their interdependent relationships. | | | | | | Editors' Suggestion M. T. Littlehales, L. A. Turnbull, M. N. Wilson, M. T. Birch, H. Popescu, N. Jaouen, J. A. T. Verezhak, G. Balakrishnan, and P. D. Hatton Phys. Rev. B 106, 214434 (2022) – Published 26 December 2022  | Magnetic skyrmions offer a rich variety of exotic behaviors that have fascinated researchers in recent years. Here, the authors study the effects of mechanical strain on skyrmions in FeGe with x-ray magnetic holographic imaging and small angle x-ray scattering, and demonstrate enhancement of the metastable skyrmion energy barriers. Real-space imaging of the magnetization allows the authors to quantify the impact of strain on the magnetic spin textures, and discuss the effects of helical reorientations on skyrmion stability and metastability. | | | | | | Editors' Suggestion Subhayan Sahu, Shao-Kai Jian, Gregory Bentsen, and Brian Swingle Phys. Rev. B 106, 224305 (2022) – Published 9 December 2022  | The interplay of unitary gates and quantum measurements leads to quantum many-body states with unique patterns of entanglement, and can even drive phase transitions between distinct entanglement phases. Here, the authors construct analytically solvable models to study the effects of long-range coupling on such measurement-induced phases, and also provide a minimal theoretical understanding of the phases and the phase transition in both spin and fermionic models. They show that power law couplings and measurements result in a rich entanglement phase diagram, including robust dynamical quantum phases with good error correcting properties, namely a power-law code distance. | | | | | | Editors' Suggestion Nanna Zhou Hagström et al. Phys. Rev. B 106, 224424 (2022) – Published 23 December 2022  | There are conflicting reports that ~100 femtosecond optical pumping causes ultrafast magnetic domain rearrangement. Such rearrangement implies a potential for unprecedented domain wall speeds. Ultrafast distortions in diffraction features via magnetic small angle x-ray scattering have been seen in some studies, while they have been absent in others. Here, the controversy is resolved by measuring a sample with domain-pattern symmetry varying from labyrinths to stripes. Importantly, spatial rearrangement occurs with labyrinths but not with stripes, suggesting novel and unexpected physics yet to be understood. | | | | | | Mark Dykman, Alexander Efros, Bertrand Halperin, Leonid Levitov, and Charles Marcus Phys. Rev. B 106, 230001 (2022) – Published 5 December 2022 | | | Editors' Suggestion Chia-Nan Yeh, Sergei Iskakov, Dominika Zgid, and Emanuel Gull Phys. Rev. B 106, 235104 (2022) – Published 5 December 2022  | Fully self-consistent GW is a many-body perturbation theory based on an approximation to the Luttinger-Ward functional. The method satisfies certain conservation laws and thermodynamic consistency, and the self-consistent framework allows us to systematically include strong correlations. Fully self-consistent GW calculations of real materials have so far been hampered by their high computational cost. This paper presents algorithmic improvements and implementation details for the fully self-consistent GW method that make such calculations routinely possible and documents the performance of the method via examples from several materials. | | | | | | Editors' Suggestion Yugo Onishi, Hikaru Watanabe, Takahiro Morimoto, and Naoto Nagaosa Phys. Rev. B 106, 235110 (2022) – Published 7 December 2022  | In this work, the authors explore the possibility of photocurrents in metals that break both inversion and time-reversal symmetries within the transparent region, i.e., where neither Drude absorption nor interband transitions can occur. The authors show that the photocurrent is O(ωJ/γ) with the frequency of the induced current ωJ and the scattering rate γ when ωJ ≪ γ. While dc photocurrent vanishes for finite γ, the theory here also indicates that nonvanishing photocurrent can appear even in the transparent region if ω ≫ γ. | | | | | | Editors' Suggestion David Dahlbom, Cole Miles, Hao Zhang, Cristian D. Batista, and Kipton Barros Phys. Rev. B 106, 235154 (2022) – Published 27 December 2022  | Quantum spin states often contain additional structure beyond the usual angular momentum dipole. The classical Landau-Lifshitz spin dynamics may be generalized to model the coupled dynamics of dipoles, quadrupoles, and higher order multipoles. This paper introduces temperature-dependent Langevin noise and damping terms to the generalized spin dynamics. High numerical efficiency is possible by working with coherent states in the Schrödinger picture. The method is illustrated via simulation of magnetic skyrmion dynamics both in and out of equilibrium. | | | | | | Editors' Suggestion A. O. Slobodeniuk, P. Koutenský, M. Bartoš, F. Trojánek, P. Malý, T. Novotný, and M. Kozák Phys. Rev. B 106, 235304 (2022) – Published 5 December 2022  | Transition metal dichalcogenide monolayers possess two nonequivalent valleys in the extrema of their band structure. It turns out that off-resonant circularly polarized light affects the electronic excitations in each valley dissimilarly. Such a phenomenon leads to different shifts of the excitonic transitions in nonequivalent valleys of the monolayer. Here, the authors report on a theoretical investigation of such valley-selective transient shifts of both 1sA and 1sB exciton transitions in MoS2 and WSe2 monolayers. The study is based on the semiconductor Bloch equations, where, contrary to the previous studies, the many-body Coulomb interaction effects are properly included. The theoretical estimates of the excitonic shifts are in a good agreement with these novel experimental results. | | | | | | Editors' Suggestion Simon Michel and Michael Potthoff Phys. Rev. B 106, 235423 (2022) – Published 21 December 2022  | The nearly adiabatic dynamics of magnetic moments exchange coupled to the spinful Haldane model, i.e., to a prototypical Chern insulator, is non-Hamiltonian due to the geometric spin torque. This results from the spin Berry curvature, which determines the feedback of the Berry phase, accumulated in the electron system, to the spin dynamics. Here, the authors study the spin Berry curvature in different parameter regimes, near a topological phase transition, and for magnetic moments coupled to the zigzag edge in a nanoribbon geometry. | | | | | | Editors' Suggestion Sheng-Hsuan Lin, Michael P. Zaletel, and Frank Pollmann Phys. Rev. B 106, 245102 (2022) – Published 2 December 2022  | Simulating the dynamics of finite two-dimensional (2D) quantum many-body systems poses challenges to numerical methods due to the exponential growth of the many-body Hilbert space. In this work, the authors explore the variational power of recently introduced isometric tensor network states (isoTNS) — a subset of general tensor-network states that allow an efficient numerical simulation. As a efficient tool to find ground states, the variational density matrix renormalization group (DMRG2) is introduced. It is then demonstrated that dynamical correlation functions for the 2D transverse field Ising model and the Kitaev Honeycomb model can be obtained. | | | | | | Editors' Suggestion Jingdong Shen, Wenxiang Jiang, Fengfeng Zhu, Guan-yong Wang, Huayao Li, Gan Zhao, Qian Li, Wensheng Yan, Wanli Yang, Yi-De Chuang, Jin-feng Jia, Dong Qian, L. Andrew Wray, and Lin Miao Phys. Rev. B 106, 245112 (2022) – Published 9 December 2022  | The one-unit-cell FeSe thin film on SrTiO3 with superconductive Tc above 60K with unique electronic structures and magnetic excitations is reported here. The authors studied FeSe/STO thin films with x-ray absorption spectroscopy (XAS), resonant inelastic x-ray scattering (RIXS), and atomic multiplet simulation. The work clarifies that FeSe thin films (1UC to 10UC) are shown with pure low-spin 3d6 electronic occupancy. Besides, the 3d6 state in 1UC FeSe/STO is more robust under oxidization. This study calls for a high-resolution RIXS exploration of the pristine 1UC FeSe/STO thin film to reveal the many-body excitations. | | | | | | Featured in Physics Editors' Suggestion Léo Mangeolle, Leon Balents, and Lucile Savary Phys. Rev. B 106, 245139 (2022) – Published 21 December 2022  | Understanding thermal Hall conductivity poses a theoretical challenge in insulators, where low-energy excitations carry no charge. In undoped cuprates, where the signal is large, we expect phonons contribute significantly to the effect. While there is no obvious universal mechanism whereby phonons break time-reversal symmetry and acquire chirality, this paper provides a general treatment of the phonon Hall effect from the inelastic scattering of phonons off of other excitations in quantum materials. As an application, magnetoelastic coupling in square-lattice Néel antiferromagnets is investigated thoroughly using the formalism developed in the first part of the paper. | | | | | | Editors' Suggestion C. Bray, K. Maussang, C. Consejo, J. A. Delgado-Notario, S. Krishtopenko, I. Yahniuk, S. Gebert, S. Ruffenach, K. Dinar, E. Moench, J. Eroms, K. Indykiewicz, B. Jouault, J. Torres, Y. M. Meziani, W. Knap, A. Yurgens, S. D. Ganichev, and F. Teppe Phys. Rev. B 106, 245141 (2022) – Published 26 December 2022  | The topological bandgap of graphene induced by intrinsic spin-orbit coupling is so narrow that it was experimentally identified for the first time only in 2019. In this work, the authors use a specific electron spin resonance technique, based on photoconductivity measurements using graphene-based terahertz detectors, to probe zero-field splittings of graphene as a function of temperature. They demonstrate experimentally that the intrinsic spin-orbit coupling and the staggered sublattice potential, which reduces the topological gap, are both temperature dependent. | | | | | | Editors' Suggestion Peishi S. Cheng, Jiace Sun, Shi-Ning Sun, Alexander Y. Choi, and Austin J. Minnich Phys. Rev. B 106, 245201 (2022) – Published 5 December 2022  | The scattering of electrons by phonons in semiconductors has been assumed to be dominated by the lowest-order process involving a single phonon. Using a new numerical approach to incorporate the next-leading-order process involving two phonons into high-field transport calculations from first principles, the authors find here that the two-phonon process contributes nearly as much as the single-phonon process to high-field transport phenomena. This finding resolves a long-standing discrepancy regarding the strength of intervalley scattering in GaAs as determined from different experimental methods. | | | | | | Editors' Suggestion Robert E. Throckmorton and S. Das Sarma Phys. Rev. B 106, 245419 (2022) – Published 19 December 2022  | A chain of singlet-triplet qubits can be an excellent realization of the Ising model, which is in turn a good platform for realizing a discrete time crystal (DTC). However, leakage of the qubits out of their computational subspace may be a problem for such a realization. The authors show that, while leakage is indeed a serious problem for the realization of a DTC, it is not insurmountable - one can mitigate leakage by applying a magnetic field that alternates from one qubit to the next. | | | | | | Editors' Suggestion Letter Daichi Hirobe, Yoji Nabei, and Hiroshi M. Yamamoto Phys. Rev. B 106, L220403 (2022) – Published 14 December 2022  | Chiral conductors exhibit spin-related charge rectification but its controllability is largely unexplored. Here, the authors combine chiral charge rectification with a field-effect transistor of tellurium. They demonstrate a gate-variable hundredfold enhancement of the rectification efficiency and enable quantitative comparison with theoretical calculations which considered chiral spin-momentum locking alongside the Zeeman effect. With this comparison across a wide range of temperature, an unexpected deviation from the conventional theory is revealed, which hints at the relevance of chirality-induced spin selectivity at higher temperatures. | | | | | | Editors' Suggestion Letter Michał Papaj and Joel E. Moore Phys. Rev. B 106, L220504 (2022) – Published 20 December 2022  | While optical techniques are fundamental in the investigation of the superconducting state, in many clean superconductors the combination of particle-hole and inversion symmetries prevents momentum-conserving transitions. Here, the authors show that by driving supercurrent through the sample optical transitions across the superconducting gap become allowed even in clean single-band systems. As the signal depends strongly on the superconducting pairing as well as on the underlying normal state, supercurrent-driven optical conductivity provides a new way of determining the superconducting state properties. | | | | | | Editors' Suggestion Letter Yong Hu (胡勇), Xianxin Wu (吴贤新), Brenden R. Ortiz, Xinloong Han (韩欣龙), Nicholas C. Plumb, Stephen D. Wilson, Andreas P. Schnyder, and Ming Shi (史明) Phys. Rev. B 106, L241106 (2022) – Published 16 December 2022  | Understanding the nature of the exotic CDW order is of crucial importance for uncovering its origin in the kagome superconductors AV3Sb5. Here, using angle-resolved photoemission spectroscopy, the authors reveal characteristic double-band splittings and band reconstructions as well as band-folding gaps in the CDW phase. By combining the findings with density functional theory calculations, they demonstrate that two representative distortions in the kagome lattice - the star of David and the trihexagonal ones - intrinsically coexist in the CDW of CsV3Sb5. | | | | | | Editors' Suggestion Letter Izidor Benedičič, Masahiro Naritsuka, Luke C. Rhodes, Christopher Trainer, Yoshiko Nanao, Aaron B. Naden, Rosalba Fittipaldi, Veronica Granata, Mariateresa Lettieri, Antonio Vecchione, and Peter Wahl Phys. Rev. B 106, L241107 (2022) – Published 19 December 2022  | Metamagnetic materials enable control of the ground state through applied magnetic fields. Understanding the microscopic origin of metamagnetism promises tuneability for new technological functionalities. Here, the authors use quasiparticle interference, magnetization measurements, and dilatometry in vector magnetic fields to establish the interplay between magnetism, spin-orbit coupling, microscopic electronic structure, and crystal structure of the trilayer ruthenate Sr4Ru3O10. These results reveal a surprising anisotropy in the properties of the material, highlighting the role of spin-orbit coupling. | | | | | | Editors' Suggestion Letter Andreas Pöschl, Alisa Danilenko, Deividas Sabonis, Kaur Kristjuhan, Tyler Lindemann, Candice Thomas, Michael J. Manfra, and Charles M. Marcus Phys. Rev. B 106, L241301 (2022) – Published 12 December 2022  | Andreev bound states emerge as excitations in semiconducting InAs, proximitized by superconducting Al. These states can be a mixture of electron and hole and their structure is determined by material parameters, external magnetic field, and gate voltages. Nonlocal conductance is a differential measurement of the current carried by Andreev bound states through a quasi-one-dimensional nanowire, and it can reveal the charge character of the states given by the BCS charge. | | | | | | | |
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