Strong correlations, orbital magnetism, and superconductivity in multi-moiré twisted trilayer graphene

ORAL

Abstract

In twisted trilayer graphene (TTG), introducing two distinct twist angles, θ12 and θ23, to the top two layers and bottom two layers, respectively, typically generates two incommensurate moiré patterns. This approach significantly expands the parameter space for exploring novel phenomena. Theoretical calculations indicate the emergence of flat bands at specific twist angle combinations, defining two “magic lines” in the two-dimensional parameter θ12 and θ23 space. Previously studied TTG systems, including magic-angle twisted trilayer graphene, moiré quasicrystal (θ12 = 1.4°, θ23 = -1.9°), and magic-angle helical trilayer graphene are all positioned on the magic lines. In this talk, I will present our systematic experimental investigation of multiple new TTG systems along the magic lines. Transport measurements revealed strong correlations in all studied magic line TTG devices, while orbital magnetism and superconductivity emerging in a subset. Our findings establish multi-moiré graphene as a versatile platform for exploring and engineering strong correlations and topological properties.

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Presenters

  • Jiaojie Yan

    • Max Planck Institute for Solid State Research

Authors

  • Jiaojie Yan

    • Max Planck Institute for Solid State Research

  • Liqiao Xia

    • Massachusetts Institute of Technology

  • Aviram Uri

    • Massachusetts Institute of Technology

  • Aaron L Sharpe

    • Stanford Institute for Materials & Energy Sciences, Stanford University
    • Stanford University

  • Julian May-Mann

    • Stanford University

  • Nicole Sabina Ticea

    • Stanford University

  • Filippo Gaggioli

    • MIT
    • ETH Zurich

  • 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

  • Liang Fu

    • Massachusetts Institute of Technology

  • Trithep Devakul

    • Stanford University

  • Jurgen H Smet

    • Max Planck Institute for Solid State Physics

  • Pablo Jarillo-Herrero

    • Massachusetts Institute of Technology