Examining the role of spin-orbit coupling in superconducting Bernal bilayer graphene

ORAL

Abstract

Ultra-clean, moiré-less Bernal bilayer graphene (BLG) exhibits a variety of emergent ground states driven by strong electron-electron interactions [1–3]. The observation of spin-polarized superconductivity is of particular interest. Recent work has shown that the superconducting transition temperature Tc in BLG is an order-of-magnitude higher when spin-orbit coupling is induced by proximity to the transition metal dichalcogenide H-WSe2 [4]. We fabricate WSe2-BLG heterostructures to explore the interplay between twist angle and pressure and their effects on electronic properties [5].

[1] F. R. Geisenhof et al., Nature 598, 53 (2021).

[2] A. M. Seiler et al., Nature 608, 298 (2022).

[3] H. Zhou et al., Science 375, 774 (2022).

[4] Y. Zhang et al., arxiv:2205.05087 (2022).

[5] Y.-Z. Chou, F. Wu, and S. D. Sarma, arxiv.org:2206.09922 (2022).

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Presenters

  • Chennan He

    • Columbia University

Authors

  • Chennan He

    • Columbia University

  • Aravind Devarakonda

    • Massachusetts Institute of Technology MIT
    • Columbia University

  • Joshua Swann

    • Columbia University

  • Song Liu

    • Columbia 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

  • James C Hone

    • Columbia University

  • Cory R Dean

    • Columbia Univ
    • Columbia University