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EnglishWe consider theoretically the spin relaxation of exciton-polaritons in semiconductor microcavities in the strong coupling regime. The dominant quantum well exciton polarization relaxation mechanism is typically due to the long-range intra-exciton electron-hole exchange. We estimate perturbatively the corresponding contribution for the lower polaritons as a function of the elastic scattering time in analogy to the Dyakonov-Perel model for electron spin relaxation. We find a strong suppression of the polariton spin flip rate due to the electron-hole exchange with respect to the quantum well exciton case.
http://hdl.handle.net/11384/7253| Titolo: | Suppressed electron-hole exchange spin flip in cavity polaritons |
| Autori interni: | LA ROCCA, Giuseppe Carlo |
| Data di pubblicazione: | 2002 |
| Rivista: | PHYSICA STATUS SOLIDI. A, APPLIED RESEARCH |
| Abstract: | We consider theoretically the spin relaxation of exciton-polaritons in semiconductor microcavities in the strong coupling regime. The dominant quantum well exciton polarization relaxation mechanism is typically due to the long-range intra-exciton electron-hole exchange. We estimate perturbatively the corresponding contribution for the lower polaritons as a function of the elastic scattering time in analogy to the Dyakonov-Perel model for electron spin relaxation. We find a strong suppression of the polariton spin flip rate due to the electron-hole exchange with respect to the quantum well exciton case. |
| Handle: | http://hdl.handle.net/11384/7253 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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