Perpendicular electric field drives Chern transitions and layer polarization changes in Hofstadter bands

Pratap Chandra Adak; Subhajit Sinha; Debasmita Giri; Dibya Kanti Mukherjee; Chandan; L. D. Varma Sangani; Surat Layek; Ayshi Mukherjee; Kenji Watanabe; Takashi Taniguchi; H. A. Fertig; Arijit Kundu; Mandar M. Deshmukh

doi:10.1038/s41467-022-35421-z

Nature Communications (Dec 2022)

Perpendicular electric field drives Chern transitions and layer polarization changes in Hofstadter bands

Pratap Chandra Adak,
Subhajit Sinha,
Debasmita Giri,
Dibya Kanti Mukherjee,
Chandan,
L. D. Varma Sangani,
Surat Layek,
Ayshi Mukherjee,
Kenji Watanabe,
Takashi Taniguchi,
H. A. Fertig,
Arijit Kundu,
Mandar M. Deshmukh

Affiliations

Pratap Chandra Adak: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research
Subhajit Sinha: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research
Debasmita Giri: Department of Physics, Indian Institute of Technology
Dibya Kanti Mukherjee: Department of Physics, Indiana University
Chandan: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research
L. D. Varma Sangani: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research
Surat Layek: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research
Ayshi Mukherjee: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research
Kenji Watanabe: Research Center for Functional Materials, National Institute for Materials Science
Takashi Taniguchi: International Center for Materials Nanoarchitectonics, National Institute for Materials Science
H. A. Fertig: Department of Physics, Indiana University
Arijit Kundu: Department of Physics, Indian Institute of Technology
Mandar M. Deshmukh: Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research

DOI: https://doi.org/10.1038/s41467-022-35421-z
Journal volume & issue: Vol. 13, no. 1
pp. 1 – 8

Abstract

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Moiré superlattices offer a rich platform fort the study of correlated and topological phases. Here, by using low-temperature magneto-transport measurements, the authors demonstrate electric-field induced switching between Chern states in twisted double-layer graphene in the Hofstadter regime.

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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