Superconductivity and strong electronic interactions in a moiré quasicrystal – part 1

ORAL

Abstract

A central theme in quantum materials research is to understand systems in which interactions between electrons dominate. While periodic and disordered systems have been extensively studied in this context, interactions in quasiperiodic crystals – systems that lack periodicity but maintain long-range order – are much less understood. Here, by twisting three layers of graphene, forming two incommensurate moiré patterns, we demonstrate a new type of emergent quasicrystalline system – a moiré quasicrystal. Crucially, our structure inherits flat electronic dispersion and highly tunable electronic properties from the parent moiré systems, allowing us to engineer quasiperiodicity for interacting electronic phenomena at relevant energy scales.

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Presenters

  • Aviram Uri

    • MIT

Authors

  • Aviram Uri

    • MIT

  • Sergio de la Barrera

    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology

  • Mallika T Randeria

    • MIT Lincoln Laboratory
    • Lincoln Laboratory, MIT

  • Trithep Devakul

    • MIT

  • Daniel Rodan-Legrain

    • Massachusetts Institute of Technology MIT

  • Philip Crowley

    • MIT

  • Nisarga Paul

    • Massachusetts Institute of Technology

  • 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

  • Ron Y Lifshitz

    • Tel Aviv University

  • Liang Fu

    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology

  • Raymond C Ashoori

    • Massachusetts Institute of Technology MIT

  • Pablo Jarillo-Herrero

    • Massachusetts Institute of Technology MIT