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Helicity-dependent ...
Helicity-dependent photocurrents in graphene layers excited by midinfrared radiation of a CO2 laser
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- Jiang, C. Y. (författare)
- University of Regensburg
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- Shalygin, V. A. (författare)
- St Petersburg State Polytech University
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- Panevin, V. Y. (författare)
- St Petersburg State Polytech University
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- Danilov, S. N. (författare)
- University of Regensburg
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- Glazov, M. M. (författare)
- Russian Academy of Science
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- Yakimova, Rositsa (författare)
- Linköpings universitet,Halvledarmaterial,Tekniska högskolan
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- Lara Avila, Samuel, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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- Kubatkin, Sergey, 1959 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers
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- Ganichev, S. D. (författare)
- University of Regensburg
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(creator_code:org_t)
- American Physical Society, 2011
- 2011
- Engelska.
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Ingår i: Physical Review B - Condensed Matter and Materials Physics. - : American Physical Society. - 2469-9950 .- 2469-9969 .- 1098-0121 .- 1550-235X. ; 84:12
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Abstract
Ämnesord
Stäng
- We report the study of the helicity-driven photocurrents in graphene excited by midinfrared light of a CO(2) 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.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- light
- photon drag
- semiconductors
- berrys phase
- pressure
- free carriers
- field
- quantum-wells
- electronic-properties
- graphite
- TECHNOLOGY
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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