- Tytuł:
- Optical Orientation of Trions in Charge-Tunable InAs/GaAs Quantum Dots
- Autorzy:
-
Laurent, S.
Eble, B.
Krebs, O.
Lemaître, A.
Urbaszek, B.
Marie, X.
Amand, T.
Voisin, P. - Powiązania:
- https://bibliotekanauki.pl/articles/2038221.pdf
- Data publikacji:
- 2004-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.70.-d
72.25.Fe
73.21.La
78.47.+p - Opis:
- We report on optical orientation of excitons and trions (singly charged exciton) in individual charge-tunable self-assembled InAs/GaAs quantum dots. When the number of electrons varies from 0 to 2, the trion photoluminescence under quasi-resonant excitation gets progressively polarized from zero to ≈100%. We discuss this behavior as the efficient quenching of exciton spin quantum beats in anisotropic quantum dots due to the trion formation. This result indicates a long hole-spin relaxation time larger than the radiative lifetime, confirmed by time-resolved photoluminescence measurements carried out on a quantum dots ensemble.
- Źródło:
-
Acta Physica Polonica A; 2004, 106, 2; 185-192
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł