Multiple topological interface states in silicene

Topological spin and valley pumping in silicene

We propose to realize adiabatic topological spin and valley pumping by using silicene, subject to the modulation of an in-plane ac electric field with amplitude Ey and a vertical electric field consisting of an electrostatic component and an ac component with amplitudes and . By tuning and , topological valley pumping or spin-valley pumping can be achieved. The low-noise valley and spin current...

ERRATUM: Quantum Anomalous Hall Effect and Tunable Topological States in 3d Transition Metals Doped Silicene

Quantum Anomalous Hall Effect and Tunable Topological States in 3d Transition Metals Doped Silicene

Silicene is an intriguing 2D topological material which is closely analogous to graphene but with stronger spin orbit coupling effect and natural compatibility with current silicon-based electronics industry. Here we demonstrate that silicene decorated with certain 3d transition metals (Vanadium) can sustain a stable quantum anomalous Hall effect using both analytical model and first-principles...

Gapless interface states between topological insulators with opposite Dirac velocities.

The Dirac cone on a surface of a topological insulator shows linear dispersion analogous to optics and its velocity depends on materials. We consider a junction of two topological insulators with different velocities, and calculate the reflectance and transmittance. We find that they reflect the backscattering-free nature of the helical surface states. When the two velocities have opposite sign...

Supplementary information for “Quantum anomalous Hall effect and tunable topological states in 3d transition metals doped silicene”