Resonant anti-stokes Raman scattering in single-walled carbon nanotubes

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dc.creatorGeorgy Gordeev
dc.creatorAdo Jorio de Vasconcelos
dc.creatorPatryk Kusch
dc.creatorBruno Gondim de Melo Vieira
dc.creatorBenjamin Scott Flavel
dc.creatorRalph Krupke
dc.creatorEduardo Bedê Barros
dc.creatorStephanie Reich
dc.date.accessioned2022-06-06T18:40:48Z
dc.date.accessioned2025-09-09T00:08:54Z
dc.date.available2022-06-06T18:40:48Z
dc.date.issued2017-12-18
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.96.245415
dc.identifier.issn2469-9969
dc.identifier.urihttps://hdl.handle.net/1843/42288
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review B
dc.rightsAcesso Restrito
dc.subjectEspalhamento Raman
dc.subjectNanotubos de carbono
dc.subject.otherRaman scattering
dc.subject.otherCarbon nanotubes
dc.titleResonant anti-stokes Raman scattering in single-walled carbon nanotubes
dc.typeArtigo de periódico
local.citation.epage245415-7
local.citation.issue24
local.citation.spage245415-1
local.citation.volume96
local.description.resumoThe dependence of the anti-Stokes Raman intensity on the excitation laser energy in carbon nanotubes is studied by resonant Raman spectroscopy. The complete resonant anti-Stokes and Stokes Raman profiles of the high-energy longitudinal phonon (G +) are obtained for (8,3), (7,5), (6,4), and (6,5) single chirality enriched samples. A high asymmetry between the intensity of the incoming and outgoing resonance is observed in the resonant Raman profiles. In contrast to Stokes scattering, anti-Stokes scattering is more intense at the outgoing resonance then at the incoming resonance. The resonance profiles are explained by a Raman process that includes the phonon-mediated interactions with the dark excitonic state. The chirality dependence of the Raman profiles is due to the variation in the exciton-phonon matrix elements, in agreement with tight-binding calculations. Based on the asymmetric Raman profiles we present the resonance factors for the Stokes/anti-Stokes ratios in carbon nanotubes.
local.identifier.orcidhttps://orcid.org/0000-0002-3273-2105
local.identifier.orcidhttps://orcid.org/0000-0002-5978-2735
local.identifier.orcidhttps://orcid.org/0000-0002-8563-6504
local.identifier.orcidhttps://orcid.org/0000-0002-8213-8673
local.identifier.orcidhttps://orcid.org/0000-0001-8427-8592
local.identifier.orcidhttps://orcid.org/0000-0001-9210-9166
local.identifier.orcidhttps://orcid.org/0000-0002-2391-0256
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.245415

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