Broadband electromagnetic response and ultrafast dynamics of few-layer epitaxial graphene

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dc.creatorChoi, H.
dc.creatorBorondics, F.
dc.creatorSiegel, D. A.
dc.creatorZhou, S. Y.
dc.creatorMartin, M. C.
dc.creatorLanzara, A.
dc.creatorKaindl, R. A.
dc.date2009-03-03
dc.date2009-05-02
dc.date.accessioned2026-07-07T13:10:44Z
dc.date.available2026-07-07T13:10:44Z
dc.descriptionWe study the broadband optical conductivity and ultrafast carrier dynamics of epitaxial graphene in the few-layer limit. Equilibrium spectra of nominally buffer, monolayer, and multilayer graphene exhibit significant terahertz and near-infrared absorption, consistent with a model of intra- and interband transitions in a dense Dirac electron plasma. Non-equilibrium terahertz transmission changes after photoexcitation are shown to be dominated by excess hole carriers, with a 1.2-ps mono-exponential decay that reflects the minority-carrier recombination time.
dc.description4 pages, 3 figures, final version
dc.identifierhttps://arxiv.org/abs/0903.0577
dc.identifierhttp://arxiv.org/abs/0903.0577
dc.identifierAppl. Phys. Lett. 94, 172102 (2009)
dc.identifierdoi:10.1063/1.3122348
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229084
dc.subjectMaterials Science
dc.titleBroadband electromagnetic response and ultrafast dynamics of few-layer epitaxial graphene
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