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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.

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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