| Autor: |
Brand MA; Department of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom., Malinowski A, Karimov OZ, Marsden PA, Harley RT, Shields AJ, Sanvitto D, Ritchie DA, Simmons MY |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2002 Dec 02; Vol. 89 (23), pp. 236601. Date of Electronic Publication: 2002 Nov 18. |
| DOI: |
10.1103/PhysRevLett.89.236601 |
| Abstrakt: |
Optical spin-dynamic measurements in a high-mobility n-doped GaAs/AlGaAs quantum well show oscillatory evolution at 1.8 K consistent with a quasi-collision-free D'yakonov-Perel'-Kachorovskii regime. Above 5 K evolution becomes exponential as expected for collision-dominated spin dynamics. Momentum scattering times extracted from Hall mobility and Monte Carlo simulation of spin polarization agree at 1.8 K but diverge at higher temperatures, indicating the importance of electron-electron scattering and an intrinsic upper limit for the spin-relaxation rate. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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