| Texto completo | |
| Autor(es): Mostrar menos - |
Cavalini, Camila
;
Rabahi, Cesar
;
de Brito, Caique S.
;
Lee, Eunji
;
Toledo, Jose R.
;
Cazetta, Felipe F.
;
de Oliveira, Raphael B. Fernandes
;
Andrade, Marcelo B.
;
Henini, Mohamed
;
Zhang, Yuhao
;
Kim, Jeongyong
;
Barcelos, Ingrid D.
;
Gobato, Yara Galvao
Número total de Autores: 13
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Applied Physics Letters; v. 124, n. 14, p. 7-pg., 2024-04-01. |
| Resumo | |
We have investigated the optical and magneto-optical properties of monolayer (ML) WSe2 on flakes of beta-Ga2O3 under high magnetic fields. Remarkably, sharp emission peaks were observed and associated with localized excitons related to point defects. A detailed study of low-temperature photoluminescence (PL) and magneto-PL under high perpendicular magnetic field up to 9 T was carried out. Several sharp emission peaks have shown valley g-factors values close to -4, which is an unusual result for localized excitons in WSe2. Furthermore, some PL peaks have shown higher g-factor values of approximate to-7 and approximate to-12, which were associated with the hybridization of strain localized dark excitons and defects. The reported results suggest that beta-Ga2O3 is, indeed, a promising dielectric substrate for ML WSe2 and also to explore fundamental physics in view of possible applications in quantum information technology. (AU) | |
| Processo FAPESP: | 22/08329-0 - Efeito do padrão de Moiré nas propriedades físicas de heteroestruturas de van der Waals |
| Beneficiário: | Yara Galvão Gobato |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 23/11265-7 - Efeito do padrão Moiré nas propriedades físicas de heteroestruturas de van der Waals |
| Beneficiário: | José Roberto de Toledo |
| Modalidade de apoio: | Bolsas no Brasil - Programa Fixação de Jovens Doutores |