Antiferromagnetic and topological states in silicene: A mean field study
Liu Fenga),b), Liu Cheng-Chengb), Yao Yu-Gui†b)
       
The energy and band gap with respect to the perpendicular electric field through first-principle calculations. The critical electric field 0.02 V/Å is marked with red dash line, which separates the topological insulator state from the band insulator state (topological trivial).