Helicity-dependent photocurrents in graphene layers excited by mid-infrared radiation of a CO₂-laser

URN to cite this document:: urn:nbn:de:bvb:355-epub-279368
DOI to cite this document:: 10.5283/epub.27936

Jiang, Chongyun ; Shalygin, V. A.

; Panevin, V. Yu. ; Danilov, Sergey N. ; Glazov, M. M.

; Yakimova, R. ; Lara-Avila, S.

; Kubatkin, S.

; Ganichev, Sergey

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Date of publication of this fulltext: 20 Mar 2013 11:17

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Abstract

We report the study of the helicity-driven photocurrents in graphene excited by midinfrared light of a CO2 laser. Illuminating an unbiased monolayer sheet of graphene with circularly polarized radiation generates-under oblique incidence-an electric current perpendicular to the plane of incidence, whose sign is reversed by switching the radiation helicity. We show that the current is caused by the ...