Symmetry breaking and circular photogalvanic effect in epitaxial CdxHg1-xTe films

URN to cite this document:: urn:nbn:de:bvb:355-epub-436032
DOI to cite this document:: 10.5283/epub.43603

Hubmann, Stefan ; Budkin, G. V.

; Otteneder, M. ; But, D.

; Sacré, Daniel

; Yahniuk, I. ; Diendorfer, K

; Bel'kov, V. V. ; Kozlov, D. A. ; Mikhailov, N. N. ; Dvoretsky, S. A. ; Varavin, V. S.

; Remesnik, V. G. ; Tarasenko, S. A. ; Knap, W. ; Ganichev, Sergey

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Date of publication of this fulltext: 20 Aug 2020 05:16

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Abstract

We report on the observation of symmetry breaking and the circular photogalvanic effect in CdxHg1-xTe alloys. We demonstrate that irradiation of bulk epitaxial films with circularly polarized terahertz radiation leads to the circular photogalvanic effect (CPGE) yielding a photocurrent whose direction reverses upon switching the photon helicity. This effect is forbidden in bulk zinc-blende ...