Spin redistribution due to Pauli blocking in quantum dots

被引：61

作者：

Kalevich, VK

Paillard, M

Kavokin, KV

Marie, X

Kovsh, AR

Amand, T

Zhukov, AE

Musikhin, YG

Ustinov, VM

Vanelle, E

Zakharchenya, BP

机构：

[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[2] Inst Natl Sci Appl, CNRS, Phys Mat Condensee Lab, F-31077 Toulouse, France

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.64.045309

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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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页数：7

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