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Recent articles in Physical Review B

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Exciton-driven renormalization of quasiparticle band structure in monolayer ${\mathrm{MoS}}_{2}$

Author(s): Yi Lin, Yang-hao Chan, Woojoo Lee, Li-Syuan Lu, Zhenglu Li, Wen-Hao Chang, Chih-Kang Shih, Robert A. Kaindl, Steven G. Louie, and Alessandra LanzaraOptical excitation serves as a powerful approach to control the electronic structure of layered van der Waals materials via many-body screening effects, induced by photoexcited free carriers,...

Frustrated magnetic interactions in FeSe

Author(s): Yiqing Gu, Qisi Wang, Hongliang Wo, Zheng He, Helen C. Walker, Jitae T. Park, Mechthild Enderle, Andrew D. Christianson, Wenbin Wang, and Jun ZhaoThe structurally simplest high-temperature superconductor FeSe exhibits an intriguing superconducting nematic paramagnetic phase with unusual spin excitation spectra that are different from typical...

Probing Majorana bound states via a $pn$ junction containing a quantum dot

Author(s): L. Bittermann, C. De Beule, D. Frombach, and P. RecherWe propose an alternative route to transport experiments for detecting Majorana bound states (MBSs) by combining topological superconductivity with quantum optics in a superconducting pn junction containing a quantum dot (QD). We consider a topological superconductor (TSC) hosting two...

Order, disorder, and monopole confinement in the spin-$\frac{1}{2}$ XXZ model on a pyrochlore tube

Author(s): Chunhan Feng, Alexander Wietek, E. Miles Stoudenmire, and Rajiv R. P. SinghWe study the ground state and thermodynamic properties of the spin-half XXZ model, with an Ising interaction Jz and a transverse exchange interaction Jx, on a pyrochlore tube obtained by joining together elementary cubes in a one-dimensional array. Periodic boundary...

Theory of silicon spin qubit relaxation in a synthetic spin-orbit field

Author(s): Amin Hosseinkhani and Guido BurkardWe develop the theory of single-electron silicon spin qubit relaxation in the presence of a magnetic field gradient. Such field gradients are routinely generated by on-chip micromagnets to allow for electrically controlled quantum gates on spin qubits. We build on a valley-dependent envelope functio…[Phys....

Significant thermal Hall effect in the $3d$ cobalt Kitaev system ${\mathrm{Na}}_{2}{\mathrm{Co}}_{2}\mathrm{Te}{\mathrm{O}}_{6}$

Author(s): Heejun Yang, Chaebin Kim, Ysun Choi, Jun Han Lee, Gaoting Lin, Jie Ma, Marie Kratochvílová, Petr Proschek, Eun-Gook Moon, Ki Hoon Lee, Yoon Seok Oh, and Je-Geun ParkKitaev physics has recently attracted attention in condensed matter for its anticipated quantum spin liquid (QSL) state. The thermal transport measurement is crucial for probing...

Anomalous temperature dependence of phonon pumping by ferromagnetic resonance in Co/Pd multilayers with perpendicular anisotropy

Author(s): W. K. Peria, D.-L. Zhang, Y. Fan, J.-P. Wang, and P. A. CrowellWe demonstrate the pumping of phonons by ferromagnetic resonance in a series of [Co(0.8nm)/Pd(1.5nm)]n multilayers (n=6, 11, 15, and 20) with strong magnon-phonon coupling and perpendicular magnetic anisotropy. The effect is shown using broadband ferromagnetic resonance over a...

Linear level repulsions near exceptional points of non-Hermitian systems

Author(s): C. Wang and X. R. WangThe nearest-neighbor level-spacing distributions are a fundamental quantity of disordered systems and are classified into different universality classes. They are the Wigner-Dyson and the Poisson functions for extended and localized states in Hermitian systems, respectively. The distributions follow…[Phys. Rev. B 106,...

Photoinduced Drude weights critically enhanced by charge fluctuations in a one-dimensional Mott insulator

Author(s): T. Yamaguchi, K. Iwano, and H. OkamotoThis Letter theoretically validated that the ω=0 component of a photoexcited Drude peak in one-dimensional Mott insulators is nonzero only when a finite amount of charge fluctuations is included. Here, we define charge fluctuations as annihilations and creations of photoexcited elementary particles,…[Phys....

Changes in polarization dictate necessary approximations for modeling electronic deexcitation intensity: Application to x-ray emission

Author(s): Subhayan Roychoudhury, Leonardo A. Cunha, Martin Head-Gordon, and David PrendergastAccurate simulation of electronic excitations and deexcitations are critical for complementing complex spectroscopic experiments and can provide validation to theoretical approaches. Using a generalized framework, we contrast the accuracy and validity of orbital-constrained...

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