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

T. P. Kaloni, N. Singh, and U. Schwingenschlögl
Phys. Rev. B 89, 035409 – Published 9 January 2014

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.

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  • Received 3 July 2013
  • Revised 23 September 2013

DOI:https://doi.org/10.1103/PhysRevB.89.035409

©2014 American Physical Society

Authors & Affiliations

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

  • Physical Science and Engineering Division, KAUST, Thuwal 23955-6900, Kingdom of Saudi Arabia

  • *udo.schwingenschlogl@kaust.edu.sa

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Issue

Vol. 89, Iss. 3 — 15 January 2014

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