Dielectric catastrophe at the Wigner-Mott transition in a moiré superlattice

Yanhao Tang; Jie Gu; Song Liu; Kenji Watanabe; Takashi Taniguchi; James C. Hone; Kin Fai Mak; Jie Shan

doi:10.1038/s41467-022-32037-1

Nature Communications (Jul 2022)

Dielectric catastrophe at the Wigner-Mott transition in a moiré superlattice

Yanhao Tang,
Jie Gu,
Song Liu,
Kenji Watanabe,
Takashi Taniguchi,
James C. Hone,
Kin Fai Mak,
Jie Shan

Affiliations

Yanhao Tang: School of Applied and Engineering Physics, Cornell University
Jie Gu: School of Applied and Engineering Physics, Cornell University
Song Liu: Department of Mechanical Engineering, Columbia University
Kenji Watanabe: National Institute for Materials Science
Takashi Taniguchi: National Institute for Materials Science
James C. Hone: Department of Mechanical Engineering, Columbia University
Kin Fai Mak: School of Applied and Engineering Physics, Cornell University
Jie Shan: School of Applied and Engineering Physics, Cornell University

DOI: https://doi.org/10.1038/s41467-022-32037-1
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 7

Abstract

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The Wigner-Mott insulator is driven by extended Coulomb repulsion, rather than the on-site Coulomb repulsion of the Mott insulator. Here, the authors observe a continuous bandwidth-tuned transition between a metal and a Wigner-Mott insulator in a MoSe2/WS2 moiré superlattice at fractional lattice filling.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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