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

Kentaro Nomura, Naoto Nagaosa

研究成果: Article査読

201 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号166802
ジャーナルPhysical review letters
106
16
DOI
出版ステータスPublished - 2011 4 18
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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