Exchange coupling and polarization relaxation in self-assembled quantum dots

被引：7

作者：

Ferreira, R ^{[1
]}

机构：

[1] Ecole Normale Super, LPMC, Phys Mat Condensee Lab, F-75005 Paris, France

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2002年 / 13卷 / 2-4期

关键词：

nanostructure; luminescence; polarization;

D O I：

10.1016/S1386-9477(01)00523-9

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We consider the spin-coupling for one electron-hole pair bound in single self-assembled quantum dots. The long-range exchange coupling leads to a vanishing spin splitting, of the ground interband transition in cylindrical dots. We evaluate the spin-splitting for different electron-hole levels of non-cylindrical structures. Both the dot shape anisotropy and an in-plane perturbing field are considered. The role of a fluctuating environment on the polarization of the bound dot luminescence is also discussed. (C) 2002 Published by Elsevier Science B.V.

引用

页码：216 / 219

页数：4

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