Transient magnetoelastic coupling in CrSBr

Bae, Youn Jue; Handa, Taketo; Dai, Yanan; Wang, Jue; Liu, Huicong; Scheie, Allen; Chica, Daniel G.; Ziebel, Michael E.; Kent, Andrew D.; Xu, Xiaodong; Shen, Ka; Roy, Xavier; Zhu, Xiaoyang

doi:10.1103/physrevb.109.104401

Transient magnetoelastic coupling in CrSBr

Journal Article · Fri Mar 01 00:00:00 EST 2024 · Physical Review. B

DOI:https://doi.org/10.1103/physrevb.109.104401· OSTI ID:2563368

Bae, Youn Jue ^[1]; ^[2]; ^[2]; ^[2]; Liu, Huicong ^[3]; Scheie, Allen ^[4]; ^[2]; ^[2]; ^[5]; Xu, Xiaodong ^[6]; Shen, Ka ^[3]; Roy, Xavier ^[2]; ^[2]

Columbia University, New York, NY (United States); Cornell University, Ithaca, NY (United States)
Columbia University, New York, NY (United States)
Beijing Normal University, Beijing (China). Center for Advanced Quantum Studies
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
New York University (NYU), NY (United States)
University of Washington, Seattle, WA (United States)

Recent research has revealed remarkable properties of the two-dimensional (2D) van der Waals layered crystal CrSBr, which is both a semiconductor and an A-type antiferromagnet. Here, in this study, we show the role of strong magnetoelastic coupling in the generation and propagation of coherent magnons in CrSBr. Time- and spatially resolved magneto-optical Kerr effect microscopy reveals two time-varying transient strain fields induced by out-of-plane transverse and in-plane longitudinal lattice displacements. These transient strain fields launch coherent wavepackets of magnons, optical and acoustic, at 24.6 ± 0.8 and 33.4 ± 0.5GHz, respectively. These findings suggest mechanisms for controlling and manipulating coherent magnons from distinct magnetoelastic couplings in this 2D van der Waals magnetic semiconductor.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: 89233218CNA000001; SC0019443

OSTI ID:: 2563368

Alternate ID(s):: OSTI ID: 2474246

Report Number(s):: LA-UR--24-23796

Journal Information:: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 10 Vol. 109; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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