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dc.creatorBorka, Duško
dc.creatorRadović, Ivan
dc.creatorMigkovic, Z. L.
dc.date.accessioned2018-03-03T14:46:09Z
dc.date.available2018-03-03T14:46:09Z
dc.date.issued2011
dc.identifier.issn0168-583X (print)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/6927
dc.description.abstractWe calculate the stopping and image forces on a point charge moving over a single-layer graphene grown on an SiC substrate, and compare them with forces arising when a charge moves over a two-dimensional electron gas (2DEG) in an Ag monolayer on a Si substrate. Given that both these systems constitute a one-atom thick 2DEG, major differences are found in the velocity and distance dependencies of the two forces owing to different electronic structures of the respective 2DEG. Within the massless Dirac fermion picture of graphenes pi electron bands, the inter-band single particle excitations are found to affect the stopping and image forces at high speeds in a substantial way, whereas such excitations are absent in the 2DEG of the metallic layer described by a single parabolic band. (C) 2010 Elsevier B.V. All rights reserved.en
dc.rightsrestrictedAccessen
dc.sourceNuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atomsen
dc.subjectGrapheneen
dc.subject2D electron gasen
dc.subjectDielectric functionen
dc.subjectStopping poweren
dc.subjectImage interactionen
dc.titleDynamic polarization of graphene by moving external charges: Comparison with 2D electron gasen
dc.typearticleen
dcterms.abstractРадовић Иван; Мигковиц, З. Л.; Борка Душко;
dc.citation.volume269
dc.citation.issue11
dc.citation.spage1225
dc.citation.epage1228
dc.identifier.wos000292371100014
dc.identifier.doi10.1016/j.nimb.2010.10.021
dc.citation.otherSpecial Issue: SI
dc.citation.rankM22
dc.description.other18th International Workshop on Inelastic Ion-Surface Collisions (IISC-18), Sep 26-Oct 01, 2010, Gatlinburg, TNen
dc.identifier.scopus2-s2.0-79957728380


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