Spin redistribution due to Pauli blocking in quantum dots

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

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

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.

Original languageEnglish
Article number045309
Pages (from-to)453091-453097
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number4
StatePublished - 15 Jul 2001

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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