Fig. 4: Numerical results of the TI model.
From: A numerical method for designing topological superconductivity induced by s-wave pairing
a Band structure corresponding to the TI model. b Band structure of the 20-layer slab in the (001) direction. c, d BdG spectrum, and the Wilson loop with Mz = 0, the corresponding Chern number is 0. e BdG spectrum for Mz = 0.132, the system is at the critical point of a topological phase transition. f 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. g, h BdG spectrum, and the Wilson loop with Mz = 0.2, the corresponding Chern number is 1. (In panels c, e, and g, the red and blue colors represent the top and bottom surface states, respectively).
