Polarization Spectroscopy of charged single self-assembled quantum dots

被引：0
|
作者：
Ware, ME [1 ]
Bracker, A [1 ]
Gammon, D [1 ]
Gershoni, D [1 ]
机构：
[1] USN, Res Lab, Washington, DC 20375 USA
来源：
PROGRESS IN COMPOUND SEMICONDUCTOR MATERIALS III - ELECTRONIC AND OPTOELECTRONIC APPLICATIONS | 2004年 / 799卷
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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 have demonstrated single dot spectroscopy of InAs/GaAs self-assembled quantum dots embedded in a bias controlled Schottky diode. The photoluminescence spectra exhibit discrete lines depending on bias, which we attribute to the recombination of positively charged, neutral, and negatively charged confined excitons. With excitation directly into the dot, large circular polarization memory is exhibited by the two charged exciton (trion) lines. This indicates long spin lifetimes for both the electron and the heavy hole in the quantum dots.
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页码：319 / 324
页数：6
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