Twisted bilayer graphene photoluminescence emission peaks at van Hove singularities.
dc.contributor.author | Souza, Thonimar Vieira de Alencar | |
dc.contributor.author | Dreifus, Driele Von | |
dc.contributor.author | Moreira, Maria Gabriela Cota | |
dc.contributor.author | Silva Neto, Eliel Gomes da | |
dc.contributor.author | Yeh, Chao-Hui | |
dc.contributor.author | Chiu, Po-Wen | |
dc.contributor.author | Pimenta, Marcos Assunção | |
dc.contributor.author | Moreira, Leandro Malard | |
dc.contributor.author | Paula, Ana Maria de | |
dc.date.accessioned | 2018-10-29T17:05:24Z | |
dc.date.available | 2018-10-29T17:05:24Z | |
dc.date.issued | 2018 | |
dc.description.abstract | We report on photoluminescence emission imaging by femtosecond laser excitation on twisted bilayer graphene samples. The emission images are obtained by tuning the excitation laser energies in the near infrared region. We demonstrate an increase of the photoluminescence emission at excitation energies that depends on the bilayer twist angle. The results show a peak for the light emission when the excitation is in resonance with transitions at the van Hove singularities in the electronic density of states. We measured the photoluminescence excitation peak position and width for samples with various twist angles showing resonances in the energy range of 1.2 to 1.7 eV. | pt_BR |
dc.identifier.citation | SOUZA, T. V. de A. et al. Twisted bilayer graphene photoluminescence emission peaks at van Hove singularities. Journal of Physics: Condensed Matter, v. 30, n. 17, p. 175302, abr. 2018. Disponível em: <http://iopscience.iop.org/article/10.1088/1361-648X/aab64b>. Acesso em: 16 jun. 2018. | pt_BR |
dc.identifier.issn | 1361648X | |
dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/10479 | |
dc.identifier.uri2 | http://iopscience.iop.org/article/10.1088/1361-648X/aab64b | pt_BR |
dc.language.iso | en_US | pt_BR |
dc.rights | restrito | pt_BR |
dc.subject | Luminescence | pt_BR |
dc.subject | Femtosecond excitation | pt_BR |
dc.title | Twisted bilayer graphene photoluminescence emission peaks at van Hove singularities. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
Arquivos
Pacote Original
1 - 1 de 1
Nenhuma Miniatura disponível
- Nome:
- ARTIGO_TwistedBilayerGraphene.pdf
- Tamanho:
- 985.65 KB
- Formato:
- Adobe Portable Document Format
Licença do Pacote
1 - 1 de 1
Nenhuma Miniatura disponível
- Nome:
- license.txt
- Tamanho:
- 924 B
- Formato:
- Item-specific license agreed upon to submission
- Descrição: