Realising Haldane's vision for a Chern insulator in buckled lattices

Wright, Anthony R. (2013) Realising Haldane's vision for a Chern insulator in buckled lattices. Scientific Reports, 3 2736.1-2736.6. doi:10.1038/srep02736

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Author Wright, Anthony R.
Title Realising Haldane's vision for a Chern insulator in buckled lattices
Journal name Scientific Reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2013-09
Sub-type Article (original research)
DOI 10.1038/srep02736
Open Access Status DOI
Volume 3
Start page 2736.1
End page 2736.6
Total pages 6
Place of publication London, United Kingdom
Publisher Nature Publishing
Collection year 2014
Language eng
Abstract The Chern insulator displays a quantum Hall effect with no net magnetic field. Proposed by Haldane over 20 years ago, it laid the foundation for the fields of topological order, unconventional quantum Hall effects, and topological insulators. Despite enormous impact over two decades, Haldane's original vision of a staggered magnetic field within a crystal lattice has been prohibitively difficult to realise. In fact, in the original paper Haldane stresses his idea is probably merely a toy model. I show that buckled lattices with only simple hopping terms, within in-plane magnetic fields, can realise these models, requiring no exotic interactions or experimental parameters. As a concrete example of this very broad, and remarkably simple principle, I consider silicene, a honeycomb lattice with out-of-plane sublattice anisotropy, in an in-plane magnetic field, and show that it is a Chern insulator, even at negligibly small magnetic fields, which is analogous to Haldane's original model.
Keyword Graphene
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 10 times in Scopus Article | Citations
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Created: Sun, 20 Oct 2013, 00:07:24 EST by System User on behalf of School of Mathematics & Physics