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

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

2011-05-04

arxiv.org/abs/1105.0884v2

Physical Review Letters 107, 136803 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Published version, online Sept 23, 2011

Scientific paper

10.1103/PhysRevLett.107.136803

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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