Room-temperature high-frequency transport of dirac fermions in epitaxially grown Sb2Te3- and Bi2Te3-based topological insulators

We report on the observation of photogalvanic effects in epitaxially grown Sb2Te3 and Bi2Te3 three-dimensional (3D) topological insulators (TI). We show that asymmetric scattering of Dirac fermions driven back and forth by the terahertz electric field results in a dc electric current. Because of the...

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Veröffentlicht in:	Physical review letters 2014-08, Vol.113 (9), p.096601-096601
Hauptverfasser:	Olbrich, P, Golub, L E, Herrmann, T, Danilov, S N, Plank, H, Bel'kov, V V, Mussler, G, Weyrich, Ch, Schneider, C M, Kampmeier, J, Grützmacher, D, Plucinski, L, Eschbach, M, Ganichev, S D
Format:	Artikel
Sprache:	eng
Schlagworte:	Asymmetry Direct current Electron scattering Epitaxial growth Fermions Insulators Three dimensional Topology
Online-Zugang:	Volltext
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