Layer- and Gate-tunable Spin-Orbit Coupling in a 2D semiconductor probed by Shubnikov-de Haas Oscillations.

ORAL

Abstract

In semiconductors spin degeneracy can be lifted by breaking time reversal symmetry or by spin-orbit coupling (SOC) when inversion symmetry is broken. We utilize tunability of ultrathin field-effect transistors combined with high mobility of indium selenide (InSe) to demonstrate SOC and to vary it over an unprecendently wide range by breaking the inversion symmetry with out-of-plane electric field. In addition, we demonstrate dependence of parameters of SOC on the number of InSe layers. High accuracy is achieved by the experimental technique: measurement of beating patterns in Shubnikov-de Haas oscillations. We achieve tuning of spin splitting from 0 and 20 meV. However, this is not the limit, as some devices demonstrate an order of magnintude higher SOC, suggesting additional paths of manipulation.

*The experiments are supported by NSF DMR 1807928 and NSF-DMR 1807969. MB acknowledges the support of DOE BES DE-SC0020187. Y.W. and W.W. acknowledge primary funding by AFOSR project no. FA9550-18-1-0335. A portion of this work was performed at the NHMFL, which is supported by National Science Foundation Cooperative Agreement No. DMR-1644779, and the State of Florida.

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Presenters

  • Dmitry Shcherbakov

    • Ohio State University
    • The Ohio State University
    • Ohio State Univ - Columbus

Authors

  • Dmitry Shcherbakov

    • Ohio State University
    • The Ohio State University
    • Ohio State Univ - Columbus

  • Petr Stepanov

    • Ohio State Univ - Columbus

  • Shahriar Memaran

    • National High Magnetic Field Laboratory

  • Yaxian Wang

    • Ohio State Univ - Columbus
    • Harvard University
    • John A. Paulson School of Engineering and Applied Sciences, Harvard University

  • Yan Xin

    • National High Magnetic Field Laboratory

  • Jiawei Yang

    • Ohio State Univ - Columbus

  • Kaya Wei

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Florida State University
    • CMS, National High Magnetic Laboratory
    • Florida State University

  • Ryan Baumbach

    • National High Magnetic Field Laboratory
    • Florida State University
    • National High Magnetic Field Laboratory, Florida State University
    • Physics, NHMFL, Florida State University

  • Wenkai Zheng

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Florida State University

  • 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

  • Marc Bockrath

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

  • Dmitry Smirnov

    • National High Magnetic Field Lab
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Tallahassee, Florida

  • Theo Siegrist

    • Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, FL 32310, USA
    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Florida State University
    • FAMU-FSU College of Engineering, Florida State University
    • Florida State University

  • Wolfgang E Windl

    • Ohio State Univ - Columbus

  • Luis Balicas

    • National High Magnetic Field Laboratory
    • National High Magnetic Field Laboratory, Florida State University
    • National High Magnetic Field Lab
    • Condensed Matter Science, National High Magnetic Field Laboratory

  • 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