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.

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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