Magnon transport in quasi-two-dimensional van der Waals antiferromagnets

ORAL

Abstract

The recent emergence of 2D van der Waals magnets down to atomic layer thickness provides an exciting platform for exploring quantum magnetism and spintronics applications. However, the potential of 2D van der Waals magnets for magnonics, has not been explored yet. In this talk, we will present the experimental observation of long distance magnon transport over several micrometers in quasi-2D van der Waals antiferromagnet MnPS3. Experimentally, we exfoliated mechanically MnPS3 flakes down to a few nanometers, and then fabricated the devices of non-local geometry where MnPS3 is the transport channel of magnon. Then magnon is injected via thermal method and detected based on inverse spin Hall effect of platinum. As the quasi-2D MnPS3 thickness decreases, a shorter magnon diffusion length is observed, which could be attributed to the surface-impurity-induced magnon scattering.

*National Basic Research Programs of China, National Natural Science Foundation of China, Key Research Program of the Chinese Academy of Sciences

–

Presenters

  • Wenyu Xing

    • International Center for Quantum Materials, Peking University
    • International Center for Quantum Materials, School of Physics, Peking University

Authors

  • Wenyu Xing

    • International Center for Quantum Materials, Peking University
    • International Center for Quantum Materials, School of Physics, Peking University

  • Luyi Qiu

    • International Center for Quantum Materials, Peking University

  • Xirui Wang

    • International Center for Quantum Materials, Peking University

  • Yunyan Yao

    • International Center for Quantum Materials, Peking University
    • International Center for Quantum Materials, School of Physics , Peking University, Beijing

  • Yang Ma

    • International Center for Quantum Materials, Peking University
    • International Center for Quantum Materials, School of Physics , Peking University, Beijing

  • Ranran Cai

    • International Center for Quantum Materials, Peking University

  • Shuang Jia

    • International Center for Quantum Materials, Peking University
    • Peking University, China
    • Physics, Peking University
    • Peking University
    • International Center for Quantum Materials, School of Physics, Peking University

  • Xincheng Xie

    • International Center for Quantum Materials, Peking University
    • International Center for Quantum Materials, School of Physics , Peking University, Beijing
    • International Center for Quantum Materials, School of Physics, Peking University, Beijing, China

  • Wei Han

    • International Center for Quantum Materials, Peking University
    • International Center for Quantum Materials, School of Physics , Peking University, Beijing