Superconductivity in Twisted Trilayer Graphene Supermoiré
ORAL
Abstract
The supermoiré lattice, arising from the interference of multiple moiré patterns, dynamically reshapes the electronic band structure by introducing new mini-bands and modifying band dispersion. Concurrently, strong electronic interactions within moiré flat bands lead to the emergence of various correlated states. However, the impact of the supermoiré lattice on the flat band systems with strong interactions remains largely unexplored. Here, we report the existence of the supermoiré lattice in the mirror-symmetry-broken twisted trilayer graphene, elucidating its role in generating mini flat bands and mini Dirac bands. We demonstrate interaction-induced symmetry-broken phases in the supermoiré mini flat bands alongside the cascade of multiple superconductor-insulator transitions enabled by the supermoiré lattice. Our work underscores the significance of the supermoiré lattice as an additional degree of freedom for tuning the electronic properties of twisted multilayer systems.
***This work was supported by SNSF Eccellenza grant, QuantERA II Programme and Innovation program.
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Presenters
Zekang Zhou
Federal Institute of Technology (EPFL)
Authors
Zekang Zhou
Federal Institute of Technology (EPFL)
Cheng Shen
EPFL
Kryštof Kolář
Freie Universität Berlin
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
