Intrinsic Quantum Anomalous Hall Effect in the Kagome Lattice Cs2LiMn3 F12

Gang Xu, Biao Lian, Shou Cheng Zhang

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

In a kagome lattice, the time reversal symmetry can be broken by a staggered magnetic flux emerging from ferromagnetic ordering and intrinsic spin-orbit coupling, leading to several well-separated nontrivial Chern bands and intrinsic quantum anomalous Hall effect. Based on this idea and ab initio calculations, we propose the realization of the intrinsic quantum anomalous Hall effect in the single layer Cs2Mn3F12 kagome lattice and on the (001) surface of a Cs2LiMn3F12 single crystal by modifying the carrier coverage on it, where the band gap is around 20 meV. Moreover, a simplified tight binding model based on the in-plane ddσ antibonding states is constructed to understand the topological band structures of the system.

Original languageEnglish (US)
Article number186802
JournalPhysical review letters
Volume115
Issue number18
DOIs
StatePublished - Oct 27 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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