Dynamic nuclear polarization of a single InAs/GaAs quantum dot:: Positive versus negative trions

被引：0
|
作者：
Eble, B. [1 ]
Krebs, O. [1 ]
Lemaitre, A. [1 ]
Kowalik, K. [1 ]
Kudelski, A. [1 ]
Urbaszek, B. [1 ]
Amand, T. [1 ]
Marie, X. [1 ]
Voisin, P. [1 ]
机构：
[1] CNRS, Lab Photon & Nanostruct, Route Nozay, F-91460 Marcoussis, France
来源：
PHYSICS OF SEMICONDUCTORS, PTS A AND B | 2007年 / 893卷
关键词：
semiconductor quantum dot; nuclear polarization; charged exciton;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report on electron spin manipulation in a single charge-tunable self-assembled InAs/GaAs quantum dot. The hyperfine interaction between the optically oriented electron and nuclear spins leads to the polarization of the quantum dot nuclei. The sign of the resulting Overhauser-shift depends on the trion state X+- or X- which demonstrates the transfer of spin polarization to the nuclei from the unpaired electron either in the initial state for X+, or in the final state for X-.
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页码：1345 / +
页数：2
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