Anisotropic gigahertz frequency antiferromagnetic resonance in layered van der Waals semiconductor

ORAL

Abstract

Antiferromagnetic spintronics in layered van der Waals magnetic systems provides unique advantages in manipulating magnon modes and provides emerging device concepts for microwave electronics. CrSBr, an air-stable vdW antiferromagnetic semiconductor, exhibits intralayer ferromagnetic order and interlayer antiferromagnetic coupling with in-plane magnetic easy axis. In this talk, we report anisotropic gigahertz frequency antiferromagnetic resonance of bulk CrSBr using broadband microwave absorption spectroscopy. We observe a rich spectrum of resonances that reflect crystalline uniaxial anisotropy, with signatures of the spin-flop transition. The role of interlayer antiferromagnetic exchange will also be discussed.

*We acknowledge support from the Cornell Presidential Postdoctoral Fellowship, AFOSR/MURI project (FA9550-19-1-0390), the Agency for Science, Technology and Research, Singapore, and NSF (DMR-1708499). We thank Cornell Center for Materials Research (DMR-1719875).

–

Presenters

  • Thow Min Jerald Cham

    • Cornell University

Authors

  • Thow Min Jerald Cham

    • Cornell University

  • Kelly Luo

    • Cornell University

  • Saba Karimeddiny

    • Cornell University

  • Avalon H Dismukes

    • Columbia University

  • Xavier Roy

    • Columbia University

  • Kin Fai Mak

    • Cornell University

  • Jie Shan

    • Cornell University
    • Cornell

  • Daniel C Ralph

    • Cornell University