Theory of Correlated Insulators and Superconductor at $\nu =1$ in Twisted WSe${}_2$

Abstract

The observation of a superconducting phase, an intertwined insulating phase, and a continuous transition between the two at a commensurate filling of $\nu =1$ in bilayers of twisted WSe${}_2$ at $\theta =3.65^0$ 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 $\nu =1$, starting with a simplified three-orbital model of twisted WSe${}_2$, 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.

6 pages, 4 figures. Supplementary material: 5 pages, 4 figures

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Cited by in corpus (14)

• Intravalley spin-polarized superconductivity in rhombohedral tetralayer graphene
• Superconductivity in twisted WSe${}_2$ from topology-induced quantum fluctuations
• Theory of Topological Superconductivity and Antiferromagnetic Correlated Insulators in Twisted Bilayer WSe${}_2$
• Twist-angle evolution of the intervalley-coherent antiferromagnet in twisted WSe${}_2$
• Theory of intervalley-coherent AFM order and topological superconductivity in tWSe${}_2$
• Approximate symmetries, insulators, and superconductivity in continuum-model description of twisted WSe${}_2$
• Topological Chiral Superconductivity Mediated by Intervalley Antiferromagnetic Fluctuations in Twisted Bilayer WSe${}_2$
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• Quantum Phases in Twisted Homobilayer Transition Metal Dichalcogenides
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• Gaplessness from disorder and quantum geometry in gapped superconductors
• Onset of spin-valley order and Stoner boundaries in twisted WSe${}_2$