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arXiv · 1105.0884

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

Jason N. Hancock·J. L. M. van Mechelen·Alexey B. Kuzmenko·Dirk van der Marel·Cristoph Brüne·Elina G. Novik·Georgy V. Astakhov·Hartmut Buhmann·Laurens W. Molenkamp
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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.

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Jason N. Hancock, J. L. M. van Mechelen, Alexey B. Kuzmenko, Dirk van der Marel, Cristoph Brüne, Elina G. Novik, Georgy V. Astakhov, Hartmut Buhmann, Laurens W. Molenkamp. 2011-10-05. Surface state charge dynamics of a high-mobility three dimensional topological insulator. https://doi.org/10.1103/physrevlett.107.136803

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