Antiferromagnetic and topological states in silicene: A mean field study
Liu Fenga),b), Liu Cheng-Chengb), Yao Yu-Gui†b)
       
(a) The edge states for U = 2.45 eV, with V = 0.0, 0.0035, 0.01, 0.0147, 0.0195, 0.0231 eV. (b) The edge states for U = 2.492 eV, with V = 0.0, 0.007, 0.012, 0.021, 0.029, 0.035 eV. Different colors represent different spins. (c) The schematic phase diagram. There are four phases as indicated by QSH state, CDW band insulator, AFM band insulator, and SQAH state. The corresponding ( C , C s ) of four phases are given to help understanding. The paths of panels  a and b are marked in the zooming phase diagram (d).