Two-dimensional time-reversal-invariant topological superconductivity in a doped quantum spin-Hall insulator
Two-dimensional time-reversal-invariant topological superconductivity in a doped quantum spin-Hall insulator
Time-reversal-invariant topological superconductors have a full paring gap in the bulk and gapless Majorana states at the edge or on the surface. Here, we theoretically propose topological superconductivity in a doped quantum spin Hall insulator. We study the pairing symmetry of doped Sn$X$ film within a two-orbital model, and show …