Identifying Topological Superconductivity in the 2D Transition Metal Dichalcogenides

Significant advances have been made towards quantum supremacy in just the last few years. However, most platforms are still plagued by short coherence times and substantial overhead generated by error correction. To remedy this, Majorana fermion modes have been proposed as a class of topologically protected qubits that are immune to conventional decoherence sources. Topological superconductors are believed to host such exotic quasiparticles, but very few material realizations have been theoretically predicted, let alone experimentally verified. To address this challenge, we search for and identify topological superconductivity (TS) in the 2D transition metal dichalcogenides (TMD). By combining state-of-the-art DFT and MBPT techniques, we are able to determine the superconducting pairing instability and associated symmetries along with the band topology in material specific detail. A few candidate materials are analyzed, revealing possible signatures of TS. This study serves as an initial step in the systematic theoretical investigation of the superconducting properties of the TMD and other correlated 2D materials.