Magnetic anisotropy modification in a garnet ferrimagnet by interfacial spin orbit coupling

ORAL

Abstract

Y3Fe5O12 (YIG) is a ferrimagnetic insulator with substantial potential in realizing pure spin-based information processing and storage exceptionally low Gilbert damping. This contributes to its potential for enabling pure spin-based information processing and storage. Interfacial interactions can induce magnetic anisotropy is in this cubic material. When a nonmagnetic heavy metal is deposited on YIG, an additional easy-plane anisotropy arising from the Rashba spin orbit coupling (SOC) is induced. Here we report that a perpendicular magnetic anisotropy (PMA) is induced at the interface between YIG and a low symmetry high SOC semimetal, WTe2. The PMA in the YIG/WTe2 heterostructure is rooted in the broken inversion symmetry in the WTe2 crystal lattice, which gives rise to an additional SOC that was previously reported to enable an out-of-plane spin orbit torque. In addition, we study the spin pumping across the YIG/WTe2 interface and find that its strength is independent of the WTe2 thickness. Our study suggests that SOC arising from the broken crystalline symmetry in WTe2 plays crucial role in modifying the interfacial magnetic anisotropy and in spin relaxation at the interface.

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Presenters

  • Guanzhong Wu

    • Ohio State Univ - Columbus
    • Deparment of Physics, The Ohio State University

Authors

  • Guanzhong Wu

    • Ohio State Univ - Columbus
    • Deparment of Physics, The Ohio State University

  • Dongying Wang

    • Deparment of Physics, The Ohio State University
    • Ohio State Univ - Columbus

  • Nish Verma

    • Deparment of Physics, The Ohio State University

  • Yang Cheng

    • Ohio State Univ - Columbus
    • Deparment of Physics, The Ohio State University
    • Physics, The Ohio State University
    • Department of Physics, Ohio State University

  • Side Guo

    • Deparment of Physics, The Ohio State University
    • Department of Physics, The Ohio State University

  • Guixin Cao

    • Deparment of Physics, The Ohio State University
    • Ohio State Univ - Columbus

  • Kenji Watanabe

    • National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institure for Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science
    • NIMS
    • National Institute of Materials Science
    • National Institute for Materials Science (NIMS)
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute for Materials Science,1-1 Namiki
    • National Institute of Material Science
    • National Institute for Materials Science, Tsukuba, Japan
    • Research Center for Functional Materials, NIMS
    • National Institute of Materials Science, Tsukuba, Japan
    • National Institude for Materials Science
    • National Institute for Materials Science, Tsukuba, Ibaraki, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials
    • NIMS - Japan
    • National Institute for Materials Science ,Japan
    • National Institute for Materials Science, Tsukuba, 305-0044, Ibaraki, Japan
    • National Institute for Material Science
    • National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science Japan
    • NIMS Tsukuba
    • National Institute for Materials Science, Research Center for Functional Materials, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Materials Science: Namiki, Tsukuba, Ibaraki, JP
    • National Institue for Material Science
    • National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan
    • Materials, NIMS
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National In
    • Research Center for Functional Materials, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • International Center for Materials nanoarchtectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • NIMS Suguba
    • NIMS, Tsukuba, Japan
    • National Institute for Materials Science, Namiki 1-1, Tsukuba, 305-0044, Ibaraki, Japan
    • National institute of material science
    • Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • Advanced Materials Laboratory, NIMS
    • Research Center for Functional Materials, National Institute for Materials Science, Ibaraki, Japan
    • National Institute for Materials Science, Research Center for Functional Materials
    • National Institute of Material Science, Japan
    • Tsukuba, National Institute for Materials Science

  • Takashi Taniguchi

    • National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institure for Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science
    • NIMS
    • National Institute of Materials Science
    • National Institute for Materials Science (NIMS)
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Science,1-1 Namiki
    • National Institute of Material Science
    • National Institute for Materials Science, Tsukuba, Japan
    • International Center for Materials Nanoarchitectonics, NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute of Materials Science, Tsukuba, Japan
    • National Institude for Materials Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba 305-0044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials
    • NIMS - Japan
    • National Institute for Materials Science ,Japan
    • National Institute for Materials Science, Tsukuba, 305-0044, Ibaraki, Japan
    • National Institute for Material Science
    • National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science Japan
    • 8International Center for Materials Nanoarchitectonics
    • NIMS Tsukuba
    • National Institute for Materials Science: Namiki, Tsukuba, Ibaraki, JP
    • National Institue for Material Science
    • National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National In
    • Research Center for Functional Materials, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • International Center for Material Nanoarchitectonics, National Institute for Materials Science
    • International Center for Materials Nanoarchitectonics
    • NIMS Suguba
    • NIMS, Tsukuba, Japan
    • National Cheng Kung University
    • National Institute for Materials Science, Namiki 1-1, Tsukuba, 305-0044, Ibaraki, Japan
    • National institute of material science
    • Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • Advanced Materials Laboratory, NIMS
    • National Institute for Materials Science, International Center for Materials Nanoarchitectonics
    • National Institute of Material Science, Japan
    • Tsukuba, National Institute for Materials Science

  • Chun Ning Lau

    • Ohio State University
    • Deparment of Physics, The Ohio State University
    • Ohio State Univ - Columbus
    • Physics, Ohio State University
    • The Ohio State University

  • Fengyuan Yang

    • Ohio State Univ - Columbus
    • Deparment of Physics, The Ohio State University
    • Department of Physics, The Ohio State University
    • Physics, The Ohio State University
    • Department of Physics, Ohio State University
    • The Ohio State University
    • Physics, Ohio State University
    • Physics Department, The Ohio State University, Columbus, Ohio 43210

  • Mohit Randeria

    • Deparment of Physics, The Ohio State University
    • Physics, Ohio State Univ - Columbus
    • Ohio State Univ - Columbus

  • Marc Bockrath

    • Deparment of Physics, The Ohio State University
    • Ohio State Univ - Columbus
    • Physics, Ohio State Univ - Columbus

  • P Chris Hammel

    • Ohio State Univ - Columbus
    • Department of Physics, The Ohio State University
    • Deparment of Physics, The Ohio State University