Superconductivity in the twisted bilayer transition metal dichalcogenide WSe2 : a quantum cluster study
Abstract
The observation of flat energy bands in transition metal dichalcogenide bilayers such as twisted WSe2 makes those materials interesting prospects for reproducing the behavior observed in graphene-based systems. We use an effective Hubbard model providing a description of twisted WSe2 to explore the presence of superconductivity, which was previously reported in experiments. Using both the variational cluster approximation and cluster dynamical mean-field theory, we predict the existence of chiral supercondictivity of type d id that can be tuned by the twist angle and by the application of a perpendicular displacement field, in both electron- and hole-doped systems.
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