Observation of Spin Swapping in an Antiferromagnet

ORAL  · Invited

Abstract

The transport of spin angular momentum of electrons is fundamental in condensed matter physics. Spin current phenomena, such as spin Hall and spin Seebeck effects, have been known to be essential in spintronics in recent decades. In this talk, we show the experimental evidence for swapping of spin currents, the interchange of directions of spin (magnon) flow and spin index, in a canted antiferromagnetic insulator LaFeO3 [1]. This effect enables the electrical readout of room-temperature magnetization switching in antiferromagnetic insulators, paving the way for the challenging antiferromagnetic spintronics.

*This work was supported by US National Science Foundation DMREF grants DMR-1729555, DMR-1729588 and DMR-1949701.

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Publication: [1] W. Lin, J. He, B. Ma, M. Matzelle, J. Xu, J. Freeland, Y. Choi, D. Haskel, B. Barbiellini, A. Bansil, G. A. Fiete, J. Zhou, and C. L. Chien. Evidence for spin swapping in an antiferromagnet. Nat. Phys. 18, 800 (2022).

Presenters

  • Weiwei Lin

    • Southeast University, China

Authors

  • Weiwei Lin

    • Southeast University, China

  • Jiaming He

    • University of Texas at Austin

  • Bowen Ma

    • The University of Hong Kong
    • University of Texas at Austin

  • Matthew Matzelle

    • Northeastern University

  • Jinsong Xu

    • Johns Hopkins University

  • John W Freeland

    • Argonne National Laboratory

  • Yongseong Choi

    • Argonne National Laboratory

  • Daniel Haskel

    • Argonne National Laboratory
    • Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, USA

  • Bernardo Barbiellini

    • LUT University
    • LUT Univeristy

  • Arun Bansil

    • Northeastern University
    • Northeastern University, Boston, USA

  • Gregory A Fiete

    • Northeastern University
    • Northeastern University, Massachusetts Institute of Technology

  • Jianshi Zhou

    • University of Texas at Austin
    • The University of Texas at Austin
    • University of Texas

  • C. L. Chien

    • Johns Hopkins University
    • Willian H. Miller III Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA