Surface-quantized anomalous hall current and the magnetoelectric effect in magnetically disordered topological insulators

Kentaro Nomura, Naoto Nagaosa

研究成果: Article

183 引用 (Scopus)

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We study theoretically the role of quenched magnetic disorder at the surface of topological insulators by numerical simulation and scaling analysis based on the massive Dirac fermion model. This addresses the problem of Anderson localization on chiral anomaly. It is found that all the surface states are localized, while the transverse conductivity is quantized to be ±e22h as long as the Fermi energy is within the bulk gap. This greatly facilitates the realization of the topological magnetoelectric effect proposed by Qi et al. with the surface magnetization direction being controlled by the simultaneous application of magnetic and electric fields.

元の言語English
記事番号166802
ジャーナルPhysical Review Letters
106
発行部数16
DOI
出版物ステータスPublished - 2011 4 18
外部発表Yes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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