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

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arxiv 1105.0884 v2 pith:SVT2KC22 submitted 2011-05-04 cond-mat.mes-hall cond-mat.mtrl-scicond-mat.str-el

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

classification cond-mat.mes-hall cond-mat.mtrl-scicond-mat.str-el
keywords surfacetopologicalinsulatorstatetechniqueadvantagesamplifyaxion
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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.

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