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Terahertz radiation...
Terahertz radiation induced photocurrents in graphene subjected to an in-plane magnetic field
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Olbrich, P. (author)
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Drexler, C. (author)
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Tarasenko, S. A. (author)
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Karch, J. (author)
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Hirmer, M. (author)
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Muller, F. (author)
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Gmitra, M. (author)
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Fabian, J. (author)
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Yakimova, R. (author)
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Lara-Avila, S. (author)
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- Kubatkin, Sergey, 1959 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Ganichev, S. D. (author)
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(creator_code:org_t)
- ISBN 9781467315975
- 2012
- 2012
- English.
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In: International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz. - 2162-2027 .- 2162-2035. - 9781467315975
- Related links:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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Abstract
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- We report on the observation of terahertz radiation induced photocurrents in single-layer graphene samples subjected to an in-plane magnetic field. The photosignal is observed for both, linearly and circularly polarized radiation. A remarkable effect is that the current inverts its sign not only by switching the magnetic field direction, but as well by changing the radiation helicity from left- to right-handedness. We demonstrate that the photocurrent stems from strong structure inversion asymmetry (SIA) of samples originating from the presence of substrate and/or adatoms on graphene. The analysis shows that the observed effect represents a new type of ratchet effects: magnetic field induced ratchets. A microscopic theory of the observed effect is developed being in a good qualitative agreement with the experiment. Furthermore, the experiments open a promising access to the investigation of SIA which is of particular interest for the understanding of graphene properties as well as applications.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- kon (subject category)
- ref (subject category)
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- By the author/editor
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Olbrich, P.
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Drexler, C.
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Tarasenko, S. A.
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Karch, J.
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Hirmer, M.
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Muller, F.
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show more...
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Gmitra, M.
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Fabian, J.
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Yakimova, R.
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Lara-Avila, S.
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Kubatkin, Sergey ...
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Ganichev, S. D.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- By the university
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Chalmers University of Technology