Second harmonic generation from exciton-magnons in van der Waals antiferromagnet MnPS<sub>3</sub>

ORAL

Abstract

Antiferromagnets comprise an important platform for spintronics due to their ultrafast spin dynamics. Recent discovery of two-dimensional (2D) van der Waals (vdW) antiferromagnets with strong intralayer charge-spin correlations has further sparked great interest in ultrafast opto-spintronics. The magnon-sideband of exciton, so-called exciton-magnons, has been observed in the optical absorption spectra of Néel-type vdW antiferromagnet MnPS3 [1]. Nevertheless, its origin and dynamics are far from being well understood. We will present our nonlinear optical spectroscopic characterization of exciton-magnons in MnPS3, focusing on its electronic/magnetic symmetry, and discuss their potential use in ultrafast photogeneration of magnons.

[1] S. Gnatchenko et al. Low Temp. Phys. 37, 144-148 (2011)

*Z.W. was supported by JSPS KAKENHI Grant No. 21K13889.

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Presenters

  • Ziqian Wang

    • RIKEN Center for Emergent Matter Science (CEMS)

Authors

  • Ziqian Wang

    • RIKEN Center for Emergent Matter Science (CEMS)

  • Yuki Shiomi

    • The University of Tokyo
    • The university of Tokyo
    • Department of Basic Science, University of Tokyo

  • Taka-hisa Arima

    • RIKEN Center for Emergent Matter Science (CEMS)

  • Naoto Nagaosa

    • RIKEN, CEMS
    • RIKEN, Center for Emergent Matter Science
    • RIKEN Center for Emergent Matter Science (CEMS)

  • Yoshinori Tokura

    • Univ of Tokyo
    • University of Tokyo
    • RIKEN CEMS
    • RIKEN Center for Emergent Matter Science (CEMS)
    • RIKEN

  • Naoki Ogawa

    • RIKEN
    • RIKEN Center for Emergent Matter Science (CEMS)