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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