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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.

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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