Magnetism and proximity effects in layered two-dimensional materials

ORAL

Abstract

The versatility of layered van der Waals materials has allowed a study of diverse physical phenomena in the two-dimensional limit. Furthermore, by means of proximity effects, one material can acquire the properties of an adjacent material by bringing them in close contact. Despite these advances, magnetism in van der Waals materials has remained largely unexplored. Chromium silicon tritelluride (CrSiTe$_{\mathrm{3}})$ is a layered ferromagnetic semiconductor with a bulk Curie temperature (T$_{\mathrm{c}})$ of 33 K. Therefore, one can conceivably use CrSiTe$_{\mathrm{3\thinspace }}$and the proximity effect to introduce long range magnetic order in graphene, which implicitly has a high mobility. Here, we report on progress in assembling mesoscopic devices of CrSiTe$_{\mathrm{3\thinspace }}$as well as proximity devices based on graphene/ CrSiTe$_{\mathrm{3\thinspace }}$heterostructures. Results from magneto-transport measurements and Kerr microscopy will be discussed.

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Authors

  • Devashish Gopalan

    • Carnegie Mellon University

  • Sergio de la Barrera

    • Carnegie Mellon University

  • Nathan Drucker

    • Carnegie Mellon University

  • Amanda Haglund

    • University of Tennessee, Knoxville

  • David Mandrus

    • The University of Tennessee, Knoxville
    • Department of Materials Science and Engineering, University of Tennessee, Knoxville, Knoxville, Tennessee 37996, USA
    • Oak Ridge National Laboratory \& University of Tennessee
    • University of Tennessee, Knoxville
    • Department of Materials Science and Engineering, University of Tennessee

  • Benjamin Hunt

    • Carnegie Mellon
    • Carnegie Mellon University