Magneto-transport Signature of Moiré of Moiré Superlattice in Consecutively Twisted Trilayer Graphene

ORAL

Abstract

Correlated insulating states and the transport signature of superconductivity have been reported in twisted trilayer graphene moiré of moiré superlattices [1] and moiré quasicrystals [2]. Towards a further understanding of their underlying mechanism, we study the low-temperature magneto-transport in a dual-gated twisted trilayer graphene device and its dependence on an out-of-plane electric field. We comprehensively examine the role of each monolayer graphene layer in determining the electronic structure of the system. We characterize low-temperature magneto-transport signatures arising from the competing length scales, and how they lead to new transport features of resulting higher order moiré of moiré superlattice.

[1] Zhang, X. et al. Phys. Rev. Lett. 127, 166802 (2021)

[2] Uri, A. et al. Nature 620, 7975 (2023)

*This work is supported by NSF DMREF funding No. NSF-1922165.

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Presenters

  • Wei Ren

    • University of Minnesota

Authors

  • Wei Ren

    • University of Minnesota

  • Konstantin Davydov

    • University of Minnesota

  • Ziyan Zhu

    • Stanford University

  • Kenji Watanabe

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

  • Takashi Taniguchi

    • Kyoto Univ
    • National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Sciences
    • NIMS
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, NIMS, Japan
    • International Center for Materials Nanoarchitectonics, Tsukuba
    • National Institue for Materials Science
    • Kyoto University
    • National Institute of Materials Science
    • International Center for Materials Nanoarchitectonics and National Institute for Materials Science

  • Efthimios Kaxiras

    • Harvard University

  • Mitchell Luskin

    • University of Minnesota

  • Ke Wang

    • University of Minnesota