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.
@article{arxiv.2209.11724,
title = {Superconductivity in the twisted bilayer transition metal dichalcogenide WSe${}_2$ : a quantum cluster study},
author = {Mathieu Bélanger and Jérôme Fournier and David Sénéchal},
journal= {arXiv preprint arXiv:2209.11724},
year = {2022}
}