Superconductivity in the twisted bilayer transition metal dichalcogenide WSe2: A quantum cluster study
Mathieu Bélanger, Jérôme Fournier, David Sénéchal
DOI 10.1103/PhysRevB.106.235135 · Physical Review B
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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 superconductivity 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| WSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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