Superconductivity and strong electronic interactions in a moiré quasicrystal – part 2

ORAL

Abstract

We explore the moiré quasicrystal emerging from twisted trilayer graphene with two twist angles using magnetotransport. Using electrostatic gating we tune between separate regimes of dispersive band-like behavior and flat electronic dispersion, the latter hosting scattered electronic states and open Fermi surfaces, in good agreement with our spectral function calculations. We uncover both superconductivity and broken-symmetry states that may be related to similar phases in moiré periodic systems, but in the absence of periodicity, offering potential constraints on the order parameter symmetries. Our system establishes a new class of two-dimensional moiré quasicrystals that can be engineered using lattice twist angles, different materials, and electrostatic gates to tune the electronic properties.

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Presenters

  • Sergio de la Barrera

    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology

Authors

  • Sergio de la Barrera

    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology

  • Aviram Uri

    • MIT

  • 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