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Collisionless hydrodynamics of doped graphene in a magnetic field

AuthorsRoldán, Rafael ; Fuchs, J. -N.; Goerbig, M. O.
Issue Date2013
CitationSolid State Communications 175-176: 114-118 (2013)
AbstractThe electrodynamics of a two-dimensional gas of massless fermions in graphene is studied by a collisionless hydrodynamic approach. A low-energy dispersion relation for the collective modes (plasmons) is derived both in the absence and in the presence of a perpendicular magnetic field. The results for graphene are compared to those for a standard two-dimensional gas of massive electrons. We further compare the results within the classical hydrodynamic approach to the full quantum mechanical calculation in the random phase approximation. The low-energy dispersion relation is shown to be a good approximation at small wave vectors. The limitations of this approach at higher order are also discussed. © 2013 Elsevier Ltd.
DescriptionEl pdf del artículo es la versión pre-print: arXiv:1305.1448
Publisher version (URL)http://dx.doi.org/10.1016/j.ssc.2013.04.011
Identifiersdoi: 10.1016/j.ssc.2013.04.011
issn: 0038-1098
e-issn: 1879-2766
Appears in Collections:(ICMM) Artículos
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