Electronic properties of SnTe-class topological crystalline insulator materials
Wang Jianfeng1, Wang Na1, Huang Huaqing1, Duan Wenhui1, 2, 3, †,
       

The (001) surface states of SnTe. (a) Band structure along high-symmetry lines from first-principles calculation. Inset: band structure of k·p model of Eq. (1) with 2D momentum near X̄. (b) Fermi surface in the whole surface BZ. (c) A series of Fermi surfaces near the X̄ point at different energies, displaying a Lifshitz transition.[43]