Optical orientation and the Hanle effect of neutral and negatively charged excitons in GaAs/AlxGa1-xAs quantum wells -: art. no. 153409

被引：47
作者：
Dzhioev, RI
Korenev, VL
Zakharchenya, BP
Gammon, D
Bracker, AS
Tischler, JG
Katzer, DS
机构：
[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[2] USN, Res Lab, Washington, DC 20375 USA
来源：
PHYSICAL REVIEW B | 2002年 / 66卷 / 15期
关键词：
D O I：
10.1103/PhysRevB.66.153409
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the optical orientation of negatively charged excitons (trions) in [001] GaAs/AlxGa1-xAs quantum wells (QW's). The spin orientation of equilibrium electrons reveals itself in the polarized luminescence of both excitons and trions. The Hanle effect of the trions differs substantially from that of the neutral excitons. It is found experimentally that the electron-spin-relaxation time in a 14-nm QW exceeds 10 ns at T=4.2 K.
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页码：1 / 4
页数：4
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