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dc.creatorAlencar, Rafael Silva-
dc.creatorRabelo, Cassiano-
dc.creatorMiranda, Hudson Luiz Silva de-
dc.creatorVasconcelos, Thiago de Lourenço e-
dc.creatorOliveira, Bruno Santos de-
dc.creatorRibeiro, Aroldo-
dc.creatorPúblio, Bruno C.-
dc.creatorRibeiro-Soares, Jenaina-
dc.creatorSouza Filho, Antonio Gomes de-
dc.creatorCançado, Luiz Gustavo-
dc.creatorJorio, Ado-
dc.date.accessioned2020-04-28T12:55:40Z-
dc.date.available2020-04-28T12:55:40Z-
dc.date.issued2019-08-
dc.identifier.citationALENCAR, R. S. et al. Probing spatial phonon correlation length in post-transition metal Monochalcogenide GaS using tip-enhanced Raman spectroscopy. Nano Letters, Washington, v. 19, n. 10, p. 7357-7364, Aug. 2019.pt_BR
dc.identifier.urihttps://pubs.acs.org/doi/abs/10.1021/acs.nanolett.9b02974pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/40381-
dc.description.abstractThe 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.pt_BR
dc.languageen_USpt_BR
dc.publisherAmerican Chemical Societypt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceNano Letterspt_BR
dc.subjectGaSpt_BR
dc.subjectTip-enhanced Raman spectroscopypt_BR
dc.subjectPhonon coherence lengthpt_BR
dc.subjectSpatial correlation lengthpt_BR
dc.subjectEspectroscopia Ramanpt_BR
dc.subjectComprimento de coerênciapt_BR
dc.subjectCorrelação espacialpt_BR
dc.titleProbing spatial phonon correlation length in post-transition metal Monochalcogenide GaS using tip-enhanced Raman spectroscopypt_BR
dc.typeArtigopt_BR
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