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Photon drag effect in (Bi1−xSbx)2Te3 three-dimensional topological insulators

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Plank, Helene ; Golub, L. E. ; Bauer, S. ; Bel'kov, V. V. ; Herrmann, Tobias ; Olbrich, P. ; Eschbach, M. ; Plucinski, L. ; Schneider, C. M. ; Kampmeier, J. ; Lanius, M. ; Mussler, G. ; Grützmacher, D. ; Ganichev, Sergey
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Date of publication of this fulltext: 29 Nov 2016 12:29


We report on the observation of a terahertz radiation-induced photon drag effect in epitaxially grown nand p-type (Bi1-xSbx)(2)Te-3 three-dimensional topological insulators with different antimony concentrations x varying from 0 to 1. We demonstrate that the excitation with polarized terahertz radiation results in a dc electric photocurrent. While at normal incidence a current arises due to the ...


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