The double-resonance Raman spectra in single-chirality (n, m) carbon nanotubes

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dc.creatorLuciano de Moura Guimarães
dc.creatorMarcus Vinicius de Oliveira Moutinho
dc.creatorPedro Paulo de Mello Venezuela
dc.creatorFrancesco Mauri
dc.creatorAriete Righi
dc.creatorMichael Steven Strano
dc.creatorCristiano Fantini Leite
dc.creatorMarcos Assunção Pimenta
dc.date.accessioned2023-06-27T18:20:48Z
dc.date.accessioned2025-09-09T00:30:47Z
dc.date.available2023-06-27T18:20:48Z
dc.date.issued2017
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttps://doi.org/10.1016/j.carbon.2017.02.048
dc.identifier.issn0008-6223
dc.identifier.urihttps://hdl.handle.net/1843/55427
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofCarbon
dc.rightsAcesso Restrito
dc.subjectNanotubos de carbono
dc.subjectQuiralidade
dc.subjectEspectroscopia de Raman
dc.subject.otherDouble-resonance Raman spectra
dc.subject.otherCarbon nanotubes
dc.subject.otherSingle-chirality
dc.subject.otherRaman spectroscopy
dc.titleThe double-resonance Raman spectra in single-chirality (n, m) carbon nanotubes
dc.typeArtigo de periódico
local.citation.epage45
local.citation.spage41
local.citation.volume117
local.description.resumoSingle-chirality (n, m) carbon nanotubes exhibit the same richness in physics of graphene including an additional phenomenon: the quantum confinement of electrons and phonons along the nanotubes circumference. Raman spectroscopy has been employed for almost 20 years to study carbon nanotubes, but the effect of the quantum confinement on the double-resonance (DR) Raman process in a single-chirality carbon nanotube was not yet understood. In this work, Raman spectra of the 2D band in enriched nanotube samples were measured using more than 70 laser excitation lines in the visible range (1.87–2.71 eV), and simulations of the D and 2D Raman spectra of single-chirality nanotubes were performed considering the quantum confinement along the nanotube circumference. We show that each single-chirality nanotube exhibits a series of non-dispersive D and 2D Raman peaks, which are not necessarily enhanced by resonances with optical transitions between van Hove singularities. Our results provide a complete explanation of the DR Raman spectrum, including the D and 2D bands, at the specificity level of a single-chirality nanotube, and will allow for the correct interpretation of the DR spectra of carbon nanotubes in samples containing a distribution of different (n, m) nanotube species.
local.identifier.orcidhttps://orcid.org/0000-0003-0356-607X
local.identifier.orcidhttps://orcid.org/0000-0002-4166-2487
local.identifier.orcidhttps://orcid.org/0000-0001-8752-9609
local.identifier.orcidhttps://orcid.org/0000-0003-0436-7857
local.identifier.orcidhttps://orcid.org/0000-0002-3389-0682
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S000862231730177X

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