Quantum spin Hall insulators in chemically functionalized As (110) and Sb (110) films Project supported by the National Natural Science Foundation of China (Grant Nos. 11474197, U1632272, and 11521404). |
(color online) (a) Plots of energy gap versus SOC strength ratio (λ/λ0), with λ and λ0 representing the tuned SOC strength and the natural SOC strength respectively. (b) Plots of energy gap of As–Cl and Sb–Cl with SOC versus in-plane strain. Red empty circle and blue empty square represent As–Cl and Sb–Cl respectively. |