Prediction of a quantum anomalous Hall state in Co-decorated silicene

T. P. Kaloni, N. Singh, U. Schwingenschlögl

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118 Scopus citations

Abstract

Based on first-principles calculations, we demonstrate that Co-decorated silicene can host a quantum anomalous Hall state. The exchange field induced by the Co atoms combined with the strong spin-orbit coupling of the silicene opens a nontrivial band gap at the K point. As compared to other transition metals, Co-decorated silicene is unique in this respect, since usually hybridization and spin-polarization induced in the silicene suppress a quantum anomalous Hall state.

Original languageBritish English
Article number035409
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number3
DOIs
StatePublished - 9 Jan 2014

Keywords

  • 73.22.Gk
  • 73.43.Cd
  • 75.50.Pp

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