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

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.

Published version, online Sept 23, 2011

References in corpus (9)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Topological Insulators with Inversion Symmetry
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Topological Field Theory of Time-Reversal Invariant Insulators
• Topological Surface States Protected From Backscattering by Chiral Spin Texture
• Topological Mott Insulators
• Quantum Hall Effect from the Topological Surface States of Strained Bulk HgTe
• Helical edge and surface states in HgTe quantum wells and bulk insulators

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