Quantum anomalous Hall effect and tunable topological states in 3d transition metals doped silicene

摘要

We engineer quantum anomalous Hall effect in silicene via doping 3dtransition metals. We show that there exists a stable quantum anomalous Halleffect in Vanadium doped silicene using both analytical model and Wannierinterpolation. We also predict the quantum valley Hall effect and electricallytunable topological states could be realized in certain transition metal dopedsilicene where the energy band inversion occurs. Our finding provides newscheme for the realization of quantum anomalous Hall effect and platform forelectrically controllable topological states.