Probing spatial phonon correlation length in post-transition metal Monochalcogenide GaS using tip-enhanced Raman spectroscopy

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorAlencar, Rafael Silva-
Autor(es): dc.creatorRabelo, Cassiano-
Autor(es): dc.creatorMiranda, Hudson Luiz Silva de-
Autor(es): dc.creatorVasconcelos, Thiago de Lourenço e-
Autor(es): dc.creatorOliveira, Bruno Santos de-
Autor(es): dc.creatorRibeiro, Aroldo-
Autor(es): dc.creatorPúblio, Bruno C.-
Autor(es): dc.creatorRibeiro-Soares, Jenaina-
Autor(es): dc.creatorSouza Filho, Antonio Gomes de-
Autor(es): dc.creatorCançado, Luiz Gustavo-
Autor(es): dc.creatorJorio, Ado-
Data de aceite: dc.date.accessioned2026-02-09T11:35:39Z-
Data de disponibilização: dc.date.available2026-02-09T11:35:39Z-
Data de envio: dc.date.issued2020-04-28-
Data de envio: dc.date.issued2020-04-28-
Data de envio: dc.date.issued2019-08-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/40381-
Fonte completa do material: dc.identifierhttps://pubs.acs.org/doi/abs/10.1021/acs.nanolett.9b02974-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1143110-
Descrição: dc.descriptionThe knowledge of the phonon coherence length is of great importance for two-dimensional-based materials since phonons can limit the lifetime of charge carriers and heat dissipation. Here we use tip-enhanced Raman spectroscopy (TERS) to measure the spatial correlation length Lc of the A1g1 and A1g2 phonons of monolayer and few-layer gallium sulfide (GaS). The differences in Lc values are responsible for different enhancements of the A1g modes, with A1g1 always enhancing more than the A1g2, independently of the number of GaS layers. For five layers, the results show an Lc of 64 and 47 nm for A1g1 and A1g2, respectively, and the coherence lengths decrease when decreasing the number of layers, indicating that scattering with the surface roughness plays an important role.-
Idioma: dc.languageen-
Publicador: dc.publisherAmerican Chemical Society-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceNano Letters-
Palavras-chave: dc.subjectGaS-
Palavras-chave: dc.subjectTip-enhanced Raman spectroscopy-
Palavras-chave: dc.subjectPhonon coherence length-
Palavras-chave: dc.subjectSpatial correlation length-
Palavras-chave: dc.subjectEspectroscopia Raman-
Palavras-chave: dc.subjectComprimento de coerência-
Palavras-chave: dc.subjectCorrelação espacial-
Título: dc.titleProbing spatial phonon correlation length in post-transition metal Monochalcogenide GaS using tip-enhanced Raman spectroscopy-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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