Unconventional superconductivity in bilayer transition metal dichalcogenides
Abstract
Bilayer transition metal dichalcogenides (TMDs) belong to a class of materials with two unique features, the coupled spin-valley-layer degrees of freedom and the crystal structure that is globally centrosymmetric but locally non-centrosymmetric. In this work, we will show that the combination of these two features can lead to a rich phase diagram for unconventional superconductivity, including intra-layer and inter-layer singlet pairings and inter-layer triplet pairings, in bilayer superconducting TMDs. In particular, we predict that the inhomogeneous Fulde-Ferrell-Larkin-Ovchinnikov state can exist in bilayer TMDs under an in-plane magnetic field. We also discuss the experimental relevance of our results and possible experimental signatures.
Keywords
Cite
@article{arxiv.1608.04139,
title = {Unconventional superconductivity in bilayer transition metal dichalcogenides},
author = {Chao-Xing Liu},
journal= {arXiv preprint arXiv:1608.04139},
year = {2017}
}
Comments
19 pages, 4 figures, Appendix is included, a missing fourth order term in the Landau free energy in the previous version of the manuscript is added