Jiang, Chongyun and Shalygin, V. A. and Panevin, V. Yu. and Danilov, S. N. and Glazov, M. M. and Yakimova, R. and Lara-Avila, S. and Kubatkin, S. and Ganichev, S. D. (2011) Helicity-dependent photocurrents in graphene layers excited by midinfrared radiation of a CO2 laser. PHYSICAL REVIEW B, 84 (12): 125429. ISSN 1098-0121,
Full text not available from this repository.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 interplay of the circular ac Hall effect and the circular photogalvanic effect. By studying the frequency dependence of the current in graphene layers grown on the SiC substrate, we observe that the current exhibits a resonance at frequencies matching the longitudinal optical phonon in SiC.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRONIC-PROPERTIES; QUANTUM-WELLS; FREE CARRIERS; BERRYS PHASE; PHOTON DRAG; SEMICONDUCTORS; GRAPHITE; PRESSURE; LIGHT; FIELD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 May 2020 13:06 |
| Last Modified: | 29 May 2020 13:06 |
| URI: | https://pred.uni-regensburg.de/id/eprint/20173 |
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