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Terahertz Radiation...
Terahertz Radiation Driven Chiral Edge Currents in Graphene
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- Karch, J. (författare)
- Terahertz Center, University of Regensburg, Germany
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- Drexler, C. (författare)
- Terahertz Center, University of Regensburg, Germany
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- Olbrich, P. (författare)
- Terahertz Center, University of Regensburg, Germany
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- Fehrenbacher, M. (författare)
- Terahertz Center, University of Regensburg, Germany
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- Hirmer, M. (författare)
- Terahertz Center, University of Regensburg, Germany
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- Glazov, M. M. (författare)
- Ioffe Physical-Technical Institute, Russian Academy of Sciences, St. Petersburg
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- Tarasenko, S. A. (författare)
- Ioffe Physical-Technical Institute, Russian Academy of Sciences, St. Petersburg,University of Erlangen-Nürnberg, Germany
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- Ivchenko, E. L. (författare)
- Ioffe Physical-Technical Institute, Russian Academy of Sciences, St. Petersburg
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- Birkner, B. (författare)
- Terahertz Center, University of Regensburg, Germany
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- Eroms, J. (författare)
- Terahertz Center, University of Regensburg, Germany
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- Weiss, D. (författare)
- Terahertz Center, University of Regensburg, Germany
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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
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- Kubatkin, Sergey, 1959 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ostler, M. (författare)
- University of Erlangen-Nürnberg, Germany
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Seyller, T. (författare)
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- Ganichev, S. D. (författare)
- Terahertz Center, University of Regensburg, Germany
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Terahertz Center, University of Regensburg, Germany Ioffe Physical-Technical Institute, Russian Academy of Sciences, St Petersburg (creator_code:org_t)
- American Physical Society, 2011
- 2011
- Engelska.
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Ingår i: Physical Review Letters. - : American Physical Society. - 1079-7114 .- 0031-9007. ; 107:27
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Abstract
Ämnesord
Stäng
- We observe photocurrents induced in single-layer graphene samples by illumination of the graphene edges with circularly polarized terahertz radiation at normal incidence. The photocurrent flows along the sample edges and forms a vortex. Its winding direction reverses by switching the light helicity from left to right handed. We demonstrate that the photocurrent stems from the sample edges, which reduce the spatial symmetry and result in an asymmetric scattering of carriers driven by the radiation electric field. The developed theory based on Boltzmann's kinetic equation is in a good agreement with the experiment. We show that the edge photocurrents can be applied for determination of the conductivity type and the momentum scattering time of the charge carriers in the graphene edge vicinity.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- semiconductors
- ionization
- deep impurities
- epitaxial graphene
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Karch, J.
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Drexler, C.
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Olbrich, P.
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Fehrenbacher, M.
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Hirmer, M.
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Glazov, M. M.
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visa fler...
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Tarasenko, S. A.
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Ivchenko, E. L.
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Birkner, B.
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Eroms, J.
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Weiss, D.
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Yakimova, Rosits ...
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Lara Avila, Samu ...
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Kubatkin, Sergey ...
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Ostler, M.
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Seyller, T.
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Ganichev, S. D.
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visa färre...
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Chalmers tekniska högskola
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