Valley-polarized metals and quantum anomalous Hall effect in 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...

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

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

Valley polarized quantum Hall effect and topological insulator phase transitions in silicene

The electronic properties of silicene are distinct from both the conventional two dimensional electron gas and the famous graphene due to strong spin orbit interaction and the buckled structure. Silicene has the potential to overcome limitations encountered for graphene, in particular the zero band gap and weak spin orbit interaction. We demonstrate a valley polarized quantum Hall effect and to...

3d Transition Metal Adsorption Induced the valley-polarized Anomalous Hall Effect in Germanene

Based on DFT + U and Berry curvature calculations, we study the electronic structures and topological properties of 3d transition metal (TM) atom (from Ti to Co) adsorbed germanene (TM-germanene). We find that valley-polarized anomalous Hall effect (VAHE) can be realized in germanene by adsorbing Cr, Mn, or Co atoms on its surface. A finite valley Hall voltage can be easily detected in their na...