Chiral Topological Superconductivity in Prototypical 2D Transition-Metal Dichalcogenides

With our entrance into the noisy intermediate-scale quantum (NISQ) era in just the last few years, greater focus has been placed on quantum error mitigation to enable sustainable quantum supremacy. This ever-growing issue stems from the short coherence times plaguing current qubit platforms, requiring evermore 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. So far, very few material realizations have been theoretically predicted, let alone experimentally verified. To address this challenge, we combine state-of-the-art DFT and MBPT techniques, to determine the superconducting pairing instability and associated symmetries in TMDCs MoS₂, WS₂, and MoTe₂. Our calculations yield a variety of superconducting states including d, f, d±id, and p±ip wave pairing modes. This study serves as a baseline in the systematic theoretical investigation of the superconducting properties of the TMDCs and other correlated 2D materials.