Probing magnetism of a 2D magnet with Pt through magnetoresistance

ORAL

Abstract

2D magnetic materials have lately attracted tremendous research interest in condensed matter physics. Very interestingly, chromium triiodide (CrI3), an insulating member of the 2D magnet family, has been discovered to possess antiferromagnetic coupling between layers, as demonstrated by magneto-optic Kerr effect and tunneling measurements in ultra-thin samples. In our work, we place a CrI3 flake in direct contact with a pre-patterned Pt Hall bar which serves as a sensing layer. We observe a sharp increase in magnetoresistance (MR) at H(along c-axis) ~ 2T. This feature coincides with a major magnetization switching previously reported in CrI3 flakes with thickness above 3 layers. Temperature and field direction dependent MR measurements have also been conducted and the results reveal further information about the nature of the magnetic interactions. Our approach offers a unique platform to study magnetic ordering in CrI3 and other highly resistive 2D magnetic materials through electrical transport measurements. It also provides an interesting perspective for studying the intriguing physics of exchange proximity coupling and spin current effect at 2D van der Waals interfaces.

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Presenters

  • Tang Su

    Physics and Astronomy, University of California, Riverside, International Center for Quantum Materials, Peking University, International Center for Quantum Materials, School of Physics, Peking University, School of Physics, Peking University

Authors

  • Tang Su

    Physics and Astronomy, University of California, Riverside, International Center for Quantum Materials, Peking University, International Center for Quantum Materials, School of Physics, Peking University, School of Physics, Peking University

  • Mark Lohmann

    University of California, Riverside, Department of Physics and Astronomy, University of California, Riverside

  • Junxue Li

    University of California, Riverside, Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA, Physics and Astronomy, University of California, Riverside, Department of Physics and Astronomy, University of California, Riverside, Physics and Astronomy, UC riverside

  • Mohammed Alghamdi

    University of California, Riverside, Department of Physics and Astronomy, University of California, Riverside

  • Mohammed Aldosary

    Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA, University of California, Riverside

  • Yadong Xu

    University of California, Riverside

  • Yawen Liu

    Physics, UCR, University of California, Riverside, Department of Physics and Astronomy, University of California, Riverside, Physics and Astronomy, UC riverside

  • Victor Ortiz

    Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA, Physics and Astronomy, University of California, Riverside, University of California, Riverside, Physics and Astronomy, UC riverside

  • Wei Yuan

    International Center for Quantum Materials, School of Physics , Peking University, Beijing, Physics and Astronomy, University of California, Riverside, University of California, Riverside, Physics and Astronomy, UC riverside

  • Kenji Watanabe

    National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305 0044, Japan, Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, National Institute for Materials Science, Advanced Materials Laboratory, National Institute for Materials Science, , 1-1 Namiki, Tsukuba 305-0044, Japan, National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, National Institute of Materials Science, NIMS, Japan, Advanced Materials Laboratory, NIMS, National Institute for Materials Science, Tsukuba, Japan, National Institute for Materials Science, Japan, Advanced Materials Laboratory, National Institute for Materials Science, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan, National Institute for Materials Science (NIMS), NIMS Tsukuba, National Institute for Materials Science (Japan), NIMS, National Institute for Material Science, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan, National Institute for Materials Science , Japan, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan., Advanced Materials Laboratory, National Institute for Materials Science, Japan, Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan, National Institute for Materials Science, Tsukuba, Ibaraki 305- 0044, Japan, National Institute for Material Science - Japan, National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan, National Institute of Material Science, Advanced Material Lab, NIMS, Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, Japan, National Institute for Materials Science, Tsukuba, 1-1 Namiki, Tsukuba, National Institute for Materials Science, NIMS/Tsukuba, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan, National Institute for Materials Science, Namiki, 305-0044, Japan, National Institute for Material Science, Japan, Advanced Materials Laboratory, NIMS, Japan, Columbia University, Advanced Materials Labaratory, National Institute for Materials Science, National Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan, National Institute of Materials Science, Japan

  • Takashi Taniguchi

    National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305 0044, Japan, National Institute for Materials Science, Advanced Materials Laboratory, National Institute for Materials Science, , 1-1 Namiki, Tsukuba 305-0044, Japan, National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, National Institute of Materials Science, NIMS, Japan, Advanced Materials Laboratory, NIMS, National Institute for Materials Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0044, Japan, National Institute for Materials Science (NIMS), NIMS Tsukuba, NIMS, National Institute for Material Science, National Institute for Materials Science, Japan, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan, National Institute for Materials Science , Japan, Advanced Materials Laboratory, National Institute for Materials Science, Japan, Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan, National Institute for Materials Science, Tsukuba, Ibaraki 305- 0044, Japan, National Institute for Material Science - Japan, National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan, National Institute of Material Science, Advanced Material Lab, NIMS, Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan, Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki, Japan, National Institute for Materials Science, Tsukuba, 1-1 Namiki, Tsukuba, National Institute for Materials Science, NIMS/Tsukuba, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Japan, National Institute for Materials Science, Namiki, 305-0044, Japan, National Institute for Material Science, Japan, Advanced Materials Laboratory, NIMS, Japan, Advanced Materials Labaratory, National Institute for Materials Science, National Institute of Material Science, 1-1 Namiki, Tsukuba, Ibaraki 205-0044, Japan, National Institute of Materials Science, Japan

  • Jing Shi

    University of California, Riverside, Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA, Physics, UCR, Physics and Astronomy, University of California, Riverside, Physics and Astronomy, UC riverside