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Carrier Dynamics in Graphene: Ultrafast Many-Particle Phenomena
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- Malic, Ermin, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
- Winzer, T. (author)
- Wendler, Florian, 1982 (author)
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- Knorr, A. (author)
- Mittendorff, M. (author)
- Konig-Otto, J. C. (author)
- Plotzing, T. (author)
- Neumaier, D. (author)
- Schneider, H. (author)
- Helm, M. (author)
- Winnerl, S. (author)
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- (creator_code:org_t)
- 2017-07-17
- 2017
- English.
- In: Annalen der Physik. - : Wiley. - 0003-3804 .- 1521-3889. ; 529:11
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Graphene is an ideal material to study fundamental Coulomb- and phonon-induced carrier scattering processes. Its remarkable gapless and linear band structure opens up new carrier relaxation channels. In particular, Auger scattering bridging the valence and the conduction band changes the number of charge carriers and gives rise to a significant carrier multiplication - an ultrafast many-particle phenomenon that is promising for the design of highly efficient photodetectors. Furthermore, the vanishing density of states at the Dirac point combined with ultrafast phonon-induced intraband scattering results in an accumulation of carriers and a population inversion suggesting the design of graphene-based terahertz lasers. Here, we review our work on the ultrafast carrier dynamics in graphene and Landau-quantized graphene is presented providing a microscopic view on the appearance of carrier multiplication and population inversion.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- carrier multiplication
- population inversion
- carrier dynamics
- graphene
Publication and Content Type
- art (subject category)
- ref (subject category)
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