| Texto completo | |
| Autor(es): Mostrar menos - |
Eliel, G. S. N.
[1]
;
Moutinho, M. V. O.
[2, 3]
;
Gadelha, A. C.
[1]
;
Righi, A.
[1]
;
Campos, L. C.
[1]
;
Ribeiro, H. B.
[4]
;
Chiu, Po-Wen
[5]
;
Watanabe, K.
[6]
;
Taniguchi, T.
[6]
;
Puech, P.
[7]
;
Paillet, M.
[8]
;
Michel, T.
[8]
;
Venezuela, P.
[2]
;
Pimenta, M. A.
[1]
Número total de Autores: 14
|
| Afiliação do(s) autor(es): | [1] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG - Brazil
[2] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ - Brazil
[3] Nucleo Multidisciplinar Pesquisas Comp NUMPEX COM, BR-25245390 Duque De Caxias, RJ - Brazil
[4] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, BR-01302907 Sao Paulo - Brazil
[5] Natl Tsing Hua Univ, Hsinchu 30013 - Taiwan
[6] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044 - Japan
[7] Univ Toulouse, CNRS, CEMES, F-31055 Toulouse - France
[8] Univ Montpellier, CNRS, Lab Charles Coulomb, F-34095 Montpellier - France
Número total de Afiliações: 8
|
| Tipo de documento: | Artigo Científico |
| Fonte: | NATURE COMMUNICATIONS; v. 9, MAR 23 2018. |
| Citações Web of Science: | 19 |
| Resumo | |
The understanding of interactions between electrons and phonons in atomically thin heterostructures is crucial for the engineering of novel two-dimensional devices. Electron-phonon (el-ph) interactions in layered materials can occur involving electrons in the same layer or in different layers. Here we report on the possibility of distinguishing intralayer and interlayer el-ph interactions in samples of twisted bilayer graphene and of probing the intralayer process in graphene/h-BN by using Raman spectroscopy. In the intralayer process, the el-ph scattering occurs in a single graphene layer and the other layer (graphene or h-BN) imposes a periodic potential that backscatters the excited electron, whereas for the interlayer process the el-ph scattering occurs between states in the Dirac cones of adjacent graphene layers. Our methodology of using Raman spectroscopy to probe different types of el-ph interactions can be extended to study any kind of graphene-based heterostructure. (AU) | |
| Processo FAPESP: | 12/50259-8 - Grafeno: fotônica e opto-eletrônica: colaboração UPM-NUS |
| Beneficiário: | Antonio Helio de Castro Neto |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa SPEC |