Probing spatial phonon correlation length in post-transition metal monochalcogenide GaS using Tip-Enhanced Raman Spectroscopy

Página do item simplificado
dc.creatorRafael Silva Alencar
dc.creatorLuiz Gustavo de Oliveira Lopes Cançado
dc.creatorAdo Jorio de Vasconcelos
dc.creatorCassiano Rabelo e Silva
dc.creatorHudson Luiz Silva de Miranda
dc.creatorThiago de Lourenço e Vasconcelos
dc.creatorBruno Santos de Oliveira
dc.creatorAroldo Ribeiro Lopes Neto
dc.creatorBruno Carvalho Públio
dc.creatorJenaina Ribeiro Soares
dc.creatorAntônio Gomes Souza Filho
dc.date.accessioned2022-07-29T15:29:18Z
dc.date.accessioned2025-09-09T00:09:08Z
dc.date.available2022-07-29T15:29:18Z
dc.date.issued2019
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.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetos
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttp://doi.org/10.1021/acs.nanolett.9b02974
dc.identifier.issn15306992
dc.identifier.urihttps://hdl.handle.net/1843/43795
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofNano Letters
dc.rightsAcesso Restrito
dc.subjectFônons
dc.subjectNanomateriais
dc.subjectEspectroscopia de Raman
dc.subject.otherTERS
dc.subject.otherGaS
dc.subject.otherNanomateriais
dc.subject.otherTip-Enhanced Raman Spectroscopy
dc.subject.otherPhonon coherence length
dc.subject.otherSpatial correlation length
dc.titleProbing spatial phonon correlation length in post-transition metal monochalcogenide GaS using Tip-Enhanced Raman Spectroscopy
dc.typeArtigo de periódico
local.citation.epage7364
local.citation.issue10
local.citation.spage7357
local.citation.volume19
local.description.resumoThe 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 A11g and A2 1g phonons of monolayer and few-layer gallium sulfide (GaS). The differences in Lc values are responsible for different enhancements of the A1g modes, with A11 g always enhancing more than the A21g, independently of the number of GaS layers. For five layers, the results show an Lc of 64 and 47 nm for A11g and A21g, respectively, and the coherence lengths decrease when decreasing the number of layers, indicating that scattering with the surface roughness plays an important role.
local.identifier.orcidhttps://orcid.org/0000-0002-9992-7564
local.identifier.orcidhttps://orcid.org/0000-0003-0816-0888
local.identifier.orcidhttps://orcid.org/0000-0002-5978-2735
local.identifier.orcidhttps://orcid.org/0000-0003-0488-2242
local.identifier.orcidhttps://orcid.org/0000-0002-9946-5224
local.identifier.orcidhttps://orcid.org/0000-0003-0195-444X
local.identifier.orcidhttps://orcid.org/0000-0002-0214-867X
local.identifier.orcidhttps://orcid.org/0000-0001-9248-2243
local.identifier.orcidhttps://orcid.org/0000-0003-3802-1168
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICA
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://pubs.acs.org/doi/10.1021/acs.nanolett.9b02974

Arquivos

Licença do pacote

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
License.txt
Tamanho:
1.99 KB
Formato:
Plain Text
Descrição:
Baixar

Coleções

Artigo de Periódico

Logo UFMG