Broken-Symmetry Shubnikov–de Haas Oscillations via a Bilayer Graphene Quantum Point Contact

ORAL

Abstract

We study low temperature magneto-transport across a dual-gated bilayer graphene quantum point contact (QPC). The QPC is gate-defined away from the physical edge of the devices, and highly-tunable by local electrostatics. By applying an out-of-plane magnetic field, we study the broken-symmetry Shubnikov–de Haas (SdH) oscillations across the quantum point contact, and their dependence on out-of-plane electric field.

*This work is supported by the National Science Foundation CAREER Award NSF-1944498.

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Presenters

  • Konstantin Davydov

    • University of Minnesota

Authors

  • Konstantin Davydov

    • University of Minnesota

  • Xi Zhang

    • University of Minnesota

  • Matthew Coles

    • University of Minnesota

  • Logan Kline

    • University of Minnesota

  • Bryan Zucker

    • University of Minnesota

  • Kenji Watanabe

    • National Institute for Materials Science
    • Research Center for Functional Materials, National Institute of Materials Science
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Takashi Taniguchi

    • National Institute for Materials Science
    • Kyoto Univ
    • International Center for Materials Nanoarchitectonics, National Institute of Materials Science
    • Kyoto University
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institute For Materials Science
    • NIMS
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan