Spin relaxation of excitons in zero-dimensional InGaAs quantum disks
作者:
H. Gotoh,
H. Ando,
H. Kamada,
A. Chavez-Pirson,
J. Temmyo,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 72,
issue 11
页码: 1341-1343
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.120988
出版商: AIP
数据来源: AIP
摘要:
We report the observation of spin relaxation of excitons in zero-dimensional semiconductor nanostructures. The spin relaxation is measured in InGaAs quantum disks by using a polarization dependent time-resolved photoluminescence method. The spin relaxation time in a zero-dimensional quantum disk is as long as 0.9 ns at 4 K, which is almost twice as long as the radiative recombination lifetime and is considerably longer than that in quantum wells. The temperature dependence of the spin relaxation time suggests the importance of exciton–acoustic phonon interaction. ©1998 American Institute of Physics.
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