Resonance effects on the Raman spectra of graphene superlattices

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorCarozo, V.-
Autor(es): dc.creatorAlmeida, C. M.-
Autor(es): dc.creatorFragneaud, B.-
Autor(es): dc.creatorBedê, P. M.-
Autor(es): dc.creatorMoutinho, M. V. O.-
Autor(es): dc.creatorRibeiro-Soares, J.-
Autor(es): dc.creatorAndrade, N. F.-
Autor(es): dc.creatorSouza Filho, A. G.-
Autor(es): dc.creatorMatos, M. J. S.-
Autor(es): dc.creatorWang, B.-
Autor(es): dc.creatorTerrones, M.-
Autor(es): dc.creatorCapaz, Rodrigo B.-
Autor(es): dc.creatorJorio, A.-
Autor(es): dc.creatorAchete, C. A.-
Autor(es): dc.creatorCançado, L. G.-
Data de aceite: dc.date.accessioned2026-02-09T12:11:08Z-
Data de disponibilização: dc.date.available2026-02-09T12:11:08Z-
Data de envio: dc.date.issued2019-11-27-
Data de envio: dc.date.issued2019-11-27-
Data de envio: dc.date.issued2013-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/37827-
Fonte completa do material: dc.identifierhttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.085401-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1156141-
Descrição: dc.descriptionIn this work, a study of resonance effects in the Raman spectra of twisted bilayer graphene (tBLG) is presented. The analysis takes into account the effect of the mismatch angle θ between the two layers, and also of the excitation laser energy on the frequency, linewidth, and intensity of the main Raman features, namely the rotationally induced R band, the G band, and the second-order G ′ (or 2 D ) band. The resonance effects are explained based on the θ dependence of the tBLG electronic structure, as calculated by ab initio methodologies. The twist angle θ also defines the observation of a “ D -like” band which obeys the double-resonance process, but relies on the superlattice along with long-range defects in order to fulfill momentum conservation. The study was possible due to the development of a route to produce and identify rotationally stacked bilayer graphene by means of atomic force microscopy (AFM).-
Idioma: dc.languageen-
Publicador: dc.publisherAmerican Physical Society-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourcePhysical Review B-
Palavras-chave: dc.subjectTwisted bilayer graphene-
Palavras-chave: dc.subjectRaman spectra-
Palavras-chave: dc.subjectGrafeno de duas camadas trançado-
Palavras-chave: dc.subjectEspectros Raman-
Título: dc.titleResonance effects on the Raman spectra of graphene superlattices-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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