Topological superconductivity in proximitized transition metal dichalcogenide Josephson junctions

We theoretically investigate the emergence of topological superconductivity in Josephson junctions (JJ) built of a two-dimensional transition metal dichalcogenide (TMD) layer in proximity to an s-wave superconductor and a magnetic insulator. We show that in a certain range of chemical potential and magnetic proximity strength, Majorana bound states form at the ends of the normal region of a TMD-based JJ. The evolution of the topological superconducting phase as the magnetization direction is varied is also investigated. The effect of the interplay between Ising spins, proximity exchange, and Rashba spin-orbit coupling on the system transition to the topological superconducting phase, as well as the corresponding signatures on the ground state phase and critical current, are analyzed in detail for both phase-fixed and phase-unbiased JJs.