Strain and Spin-Orbital Coupling Effects on Electronic Structures and Magnetism of Semi-Hydrogenated Stanene

The magnetic configurations and electronic properties of semi hydrogenated (SH) stanene nanosheets are studied by means of using first principle calculations, considering spin-orbital coupling (SOC) and strain effects. The results show that the SH stanene possesses the ferromagnetic ground states with magnetic moments of 1 mu(B) and high Curie temperature under different strains. Moreover, the SOC effects increase remarkably the gap values of pristine stanene, while they reduce that of SH stanene. Interestingly, the semiconductor metal transition occurs when only about 2% strain is applied to the SH stanene considering the SOC effects. These studies indicate that the SH stanene nanosheets may have potential in the applications of spin electronics.