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Phys Rev Lett. 2011 Sep 23;107(13):136803. Epub 2011 Sep 21.

Surface state charge dynamics of a high-mobility three-dimensional topological insulator.

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  • 1Département de Physique de la Matière Condensée, Université de Genève, Switzerland.

Erratum in

  • Phys Rev Lett. 2011 Sep 30;107(14):149903.

Abstract

We present a magneto-optical study of the three-dimensional topological insulator, strained HgTe, using a technique which capitalizes on advantages of time-domain spectroscopy to amplify the signal from the surface states. This measurement delivers valuable and precise information regarding the surface-state dispersion within <1 meV of the Fermi level. The technique is highly suitable for the pursuit of the topological magnetoelectric effect and axion electrodynamics.

PMID:
22026887
[PubMed]
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