Theory of correlated insulators and superconductor at ν = 1 in twisted WSe2

Sunghoon Kim, Juan Felipe Mendez-Valderrama, Xuepeng Wang and Debanjan Chowdhury ()
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Sunghoon Kim: Cornell University
Juan Felipe Mendez-Valderrama: Cornell University
Xuepeng Wang: Cornell University
Debanjan Chowdhury: Cornell University

Nature Communications, 2025, vol. 16, issue 1, 1-7

Abstract: Abstract The observation of a superconducting phase, an intertwined insulating phase, and a continuous transition between the two at a commensurate filling of ν = 1 in bilayers of twisted WSe2 at θ = 3.650 raises a number of intriguing questions about the origin of this phenomenology. Here we report the possibility of a displacement-field induced continuous transition between a superconductor and a quantum spin-liquid Mott insulator at ν = 1, starting with a simplified three-orbital model of twisted WSe2, including on-site, nearest-neighbor density-density interactions, and a chiral-exchange interaction, respectively. By employing parton mean-field theory, we discuss the nature of these correlated insulators, their expected evolution with the displacement-field, and their phenomenological properties.

Date: 2025
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DOI: 10.1038/s41467-025-56816-8

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