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Shining magnon on quantum Hall ferromagnetic junctions

ORAL

Abstract

The quantum Hall (QH) ferromagnetic state in graphene is a unique platform for investigating the properties of magnon excitations, which can be generated by separately biasing two QH edge states of opposite spin. In our work, we explore the magnon interaction with a QH ferromagnet junction. The state of the junction can be controlled by non-local magnon excitations created elsewhere in the sample. Our results may assist in developing the evolving understanding of the ground states and excitations in this broken SU(4) symmetry system, as well as enable the future development of spin-based devices in 2D materials.

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Presenters

  • Chun-Chia Chen

    Duke University

Authors

  • Chun-Chia Chen

    Duke University

  • Lingfei Zhao

    Duke University

  • Ethan G Arnault

    MIT Research Laboratory of Electronics, Duke University, Massachusetts Institute of Technology

  • Trevyn Larson

    Duke University

  • 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

  • Francois Amet

    Appalachian State University

  • Gleb Finkelstein

    Duke University