| Autor: |
Cavalini, Camila, Rabahi, Cesar, de Brito, Caique S., Lee, Eunji, Toledo, José R., Cazetta, Felipe F., Fernandes de Oliveira, Raphael B., Andrade, Marcelo B., Henini, Mohamed, Zhang, Yuhao, Kim, Jeongyong, Barcelos, Ingrid D., Galvão Gobato, Yara |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 4/1/2024, Vol. 124 Issue 14, p1-7, 7p |
| Abstrakt: |
We have investigated the optical and magneto-optical properties of monolayer (ML) WSe2 on flakes of β-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 ≈ −7 and ≈ −12, which were associated with the hybridization of strain localized dark excitons and defects. The reported results suggest that β-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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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