Spin redistribution due to Pauli blocking in quantum dots
Physical review. B, Condensed matter2001Vol. 64(4)
Citations Over TimeTop 10% of 2001 papers
V. K. Kalevich, M. Paillard, K. V. Kavokin, X. Marie, A. R. Kovsh, T. Amand, A. E. Zhukov, Yu. G. Musikhin, V. M. Ustinov, E. Vanelle, B. P. Zakharchenya
Abstract
We have studied electron spin dynamics in self-organized InAs/GaAs quantum dots (QD's) by time-resolved photoluminescence (PL). The electron polarization of the QD discrete energy levels is determined from the circular polarization of the QD emission. When the GaAs barrier is optically pumped, a transient increase of the QD excited-state PL polarization is observed. This effect results from the spin dependence of electron energy relaxation as a consequence of the Pauli exclusion principle. A theoretical model qualitatively describing the experimental results is developed.
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