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- URN zum Zitieren dieses Dokuments:
- urn:nbn:de:bvb:355-epub-357643
- DOI zum Zitieren dieses Dokuments:
- 10.5283/epub.35764
Zusammenfassung
We report on the observation of a circular photogalvanic current excited by terahertz laser radiation in helical edge channels of two-dimensional (2D) HgTe topological insulators (TIs). The direction of the photocurrent reverses by switching the radiation polarization from a right-handed to a left-handed one and, for fixed photon helicity, is opposite for the opposite edges. The photocurrent is ...
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