Electric field effect in the spin dynamics of self-assembled InAs/GaAs quantum dots

被引：0

作者：

Monte, A. F. G. ^{[1
]}

Morais, P. C.

Hopkinson, M.

机构：

[1] Univ Fed Uberlandia, Inst Fis, BR-38400902 Uberlandia, MG, Brazil

[2] Univ Brasilia, Inst Fis, BR-70910900 Brasilia, DF, Brazil

[3] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期

关键词：

quantum dot; spin; electric field; photocurrent;

D O I：

10.1016/j.jmmm.2007.02.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We identify fundamental mechanisms of electron and hole dynamics in self-organized InAs/GaAs quantum dots (QDs) subject to vertical electric fields by photocurrent investigations. We propose a spin-flip mechanism involving a spin exchange between neighboring QDs. The spin-flip process is revealed in the photocurrent dynamics when the exciton population increases unexpectedly with reverse bias. (c) 2007 Published by Elsevier B.V.

引用

页码：E52 / E55

页数：4

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