Spin redistribution due to Pauli blocking in quantum dots
Spin redistribution due to Pauli blocking in quantum dots
复制标题
量子点中泡利阻挡导致的自旋重新分布
DOI：
10.1103/physrevb.64.045309
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发表时间：
2001
影响因子：
3.7
通讯作者：
B. P. Zakharchenya
中科院分区：
文献类型：
--
作者：
V. Kalevich;M. Paillard;K. Kavokin;X. Marie;A. R. Kovsh;T. Amand;A. Zhukov;Y. Musikhin;V. Ustinov;E. Vanelle;B. P. Zakharchenya
利用时间分辨光致发光（PL）技术研究了自组织InAs/GaAs量子点中电子自旋动力学。QD离散能级的电子极化由QD发射的圆极化确定。当GaAs势垒被光泵浦时，观察到QD激发态PL偏振的瞬态增加。这种效应是由于电子能量弛豫的自旋依赖性，这是泡利不相容原理的结果。定性描述实验结果的理论模型。
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.