Spatially coherent tip-enhanced Raman spectroscopy measurements of electron-phonon interaction in a graphene device

Página do item simplificado
dc.creatorRafael Battistella Nadas
dc.creatorJhonattan Córdoba Ramírez
dc.creatorLeonardo C. Campos
dc.creatorRiichiro Saito
dc.creatorLuiz Gustavo Cançado
dc.creatorAdo Jorio
dc.creatorAndreij C. Gadelha
dc.creatorTiago C. Barbosa
dc.creatorCassiano Rabelo
dc.creatorThiago de Lourenço e Vasconcelos
dc.creatorVitor Monken
dc.creatorAry V. R. Portes
dc.creatorKenji Watanabe
dc.creatorTakashi Taniguchi
dc.date.accessioned2025-05-29T14:24:15Z
dc.date.accessioned2025-09-08T23:48:50Z
dc.date.available2025-05-29T14:24:15Z
dc.date.issued2023
dc.identifier.doi10.1021/acs.nanolett.3c00851
dc.identifier.issn15306984
dc.identifier.urihttps://hdl.handle.net/1843/82623
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.rightsAcesso Restrito
dc.subjectTeoria dos grupos
dc.subject.otherElectrical energy, Group theory, Phonons, Raman spectroscopy, Two dimensional materials, TERS, Graphene, Kohn anomaly, Coherence Length
dc.titleSpatially coherent tip-enhanced Raman spectroscopy measurements of electron-phonon interaction in a graphene device
dc.typeArtigo de periódico
local.citation.spage1
local.citation.volume1
local.description.resumoCoherence length (Lc) of the Raman scattering process in graphene as a function of Fermi energy is obtained with spatially coherent tip-enhanced Raman spectroscopy. Lc decreases when the Fermi energy is moved into the neutrality point, consistent with the concept of the Kohn anomaly within a ballistic transport regime. Since the Raman scattering involves electrons and phonons, the observed results can be rationalized either as due to unusually large variation of the longitudinal optical phonon group velocity vg, reaching twice the value for the longitudinal acoustic phonon, or due to changes in the electron energy uncertainty, both properties being important for optical and transport phenomena that might not be observable by any other technique.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELETRÔNICA
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://pubs.acs.org/doi/full/10.1021/acs.nanolett.3c00851

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