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dc.creatorPolitano, A.
dc.creatorRadović, Ivan
dc.creatorBorka, Duško
dc.creatorMiskovic, Z. L.
dc.creatorYu, H. K.
dc.creatorFarias, D.
dc.creatorChiarello, G.
dc.date.accessioned2018-03-01T17:23:35Z
dc.date.available2018-03-01T17:23:35Z
dc.date.issued2017
dc.identifier.issn0008-6223 (print)
dc.identifier.issn1873-3891 (electronic)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/1414
dc.description.abstractBy means of angle-resolved electron energy loss spectroscopy, we have measured the interband it plasmon in high-quality graphene grown on peeled-off epitaxial Cu(111) foils. Experimental loss spectra have been reproduced by means of a hydrodynamic model. The dispersion relation of the plasmon frequency shows a nearly-flat dispersion up to a critical wave-vector of 0.3 angstrom(-1). We propose that the observed behavior could be originated by confinement effects in ripples in the strained graphene sheet. Strain also limits the dispersion at higher momenta, as a consequence of the increased effective mass of charge carriers. The analysis of momentum dependence of the line-width and of the inverse quality factor indicates that damping processes are dominated by decay in electron-hole pairs via indirect interband transitions. (C) 2016 Elsevier Ltd. All rights reserved.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45005/RS//
dc.relationCOST Action [MP1306], Natural Sciences and Engineering Research Council of Canada [249506-2011], Spanish MINECO [MAT2015-65356-C3-3-R], Spanish MINECO through the Maria de Maeztu Programme for Units of Excellence in RD [MDM-2014-0377]
dc.rightsrestrictedAccessen
dc.sourceCarbonen
dc.titleDispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foilsen
dc.typearticleen
dcterms.abstractYу, Х. К.; Политано, A.; Цхиарелло, Г.; Радовић Иван; Мисковиц, З. Л.; Борка Душко; Фариас, Д.;
dc.citation.volume114
dc.citation.spage70
dc.citation.epage76
dc.identifier.wos000393249600009
dc.identifier.doi10.1016/j.carbon.2016.11.073
dc.identifier.scopus2-s2.0-85003554341


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