Two-dimensional topological insulators with large bulk energy gap

Yang Z Q^{1, 2}, Jia Jin-Feng^{1, 2}, Qian Dong^{1, 2, †,}

Crystal and electronic structures of stanene, from Ref. [15]. (a) Hexagonal lattice of the stanene surface. (b) Lattice model of stanene on Bi₂Te₃ substrate. Orange and green balls represent stanene atoms. Grey balls represent Te atoms. (c) ARPES spectra of stanene/Bi₂Te₃. Blue dotted lines mark stanene bands.