Fig. 5: Numerical results of Bi2Se3.
From: A numerical method for designing topological superconductivity induced by s-wave pairing
a Band structure corresponding to Bi2Se3. b Band structure of the 10-layer slab in the (001) direction. c The decay of superconducting pairing with the number of layers. d Energy of the BdG Hamiltonian of the system at Γ point as a function of the surface spin splitting Mz, This can be viewed as a topological phase diagram. The blue lines represent the phase diagrams for superconducting pairing that is uniformly distributed without decay, while the red lines correspond to the phase diagrams when decay is taken into account. e, f BdG spectrum, and the Wilson loop with Mz = 0.3 eV when decay is not considered. It is a topologically trivial phase. g, h BdG spectrum, and the Wilson loop with Mz = 0.3 eV, when decay is considered, the corresponding Chern number is −1.
