Simultaneous transport and tunnelling spectroscopy of a moiré superconductor

ORAL

Abstract

Moiré material serves as a versatile platform for investigating strongly-correlated emergent phenomena, while offering flexible in situ tunability. Among all the graphene-based and moiré systems, the magic-angle twisted graphene family exhibits the highest superconducting transition temperature, yet the nature of its superconductivity remains undetermined. We present the first simultaneous tunneling spectroscopy and transport measurements on a magic-angle twisted graphene system, directly correlating tunneling spectra with transport properties. Detailed temperature- and magnetic-field-dependent studies of the tunneling spectra reveal insights into the superconducting phases. Our platform provides a new framework for studying moiré superconductors and can be easily extended to other quantum material systems.

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Presenters

  • Shuwen Sun

    • Massachusetts Institute of Technology

Authors

  • Shuwen Sun

    • Massachusetts Institute of Technology

  • Jeong Min Park

    • Princeton University

  • Kenji Watanabe

    • National Institute for Materials Science
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan
    • National Institute of Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science

  • Takashi Taniguchi

    • National Institute for Materials Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science

  • Pablo Jarillo-Herrero

    • Massachusetts Institute of Technology