Spin-orbit torques in heterostructures of 2D van der Waals magnets

ORAL

Abstract

The discovery of intrinsic magnetism in 2D materials has opened an exciting new platform for spintronics, allowing fundamental studies of efficient mechanisms for electrically controlling magnetic materials. Here we explore spin-orbit torques in heterostructures of ultrathin single-crystal magnetic insulators and large spin-orbit coupling (SOC) materials: heavy metals and topological insulators. We report current induced switching in insulating ferromagnet Cr2Ge2Te6 at current densities as low as 106 Acm-2 from spin-orbit torques generated in heterostructures with Pt and Ta. We will discuss methods for quantifying the efficiency of these torques using both optical and electrical-transport techniques.

*DOE (DE-SC0017671)

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Presenters

  • Vishakha Gupta

    • Cornell University

Authors

  • Vishakha Gupta

    • Cornell University

  • Gregory M Stiehl

    • Cornell University

  • Thow Min Cham

    • Cornell University

  • Joseph Mittelstaedt

    • Physics, Cornell University
    • Cornell University

  • ARNAB BOSE

    • School of Applied and Engineering Physics, Cornell University
    • Cornell University

  • Kaifei Kang

    • Cornell University
    • School of Applied and Engineering Physics, Cornell University

  • Shengwei Jiang

    • Cornell University

  • Kin Fai Mak

    • Cornell University
    • School of Applied and Engineering Physics, Cornell University
    • Cornell University, NY, USA
    • Applied and Engineering Physics, Cornell University

  • Jie Shan

    • Cornell University
    • School of Applied and Engineering Physics and Department of Physics, Cornell University
    • Cornell University, NY, USA
    • Physics, Cornell University
    • Case Western Reserve University

  • Robert Buhrman

    • School of Applied and Engineering Physics, Cornell University
    • Cornell University
    • Physics, Cornell University

  • Daniel Ralph

    • Cornell University
    • Physics, Cornell University
    • Department of Physics, Cornell University
    • Department of Materials Science and Engineering, Cornell University