Spin relaxation in charged quantum dots measured by coherent optical phase modulation spectroscopy

被引：11
|
作者：
Cheng, Jun
Wu, Yanwen
Xu, Xiaodong
Sun, Dong
Steel, D. G.
Bracker, A. S.
Gammon, D.
Yao, Wang
Sham, L. J.
机构：
[1] Univ Michigan, Harrison M Randall Lab Phys, FOCUS, Ann Arbor, MI 48109 USA
[2] USN, Res Lab, Washington, DC 20375 USA
[3] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
来源：
SOLID STATE COMMUNICATIONS | 2006年 / 140卷 / 7-8期
关键词：
quantum dots; spin dynamics; phase modulation; nonlinear spectroscopies;
D O I：
10.1016/j.ssc.2006.08.035
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Measurements of the electron spin relaxation rate (T-1) in charged GaAs quantum dots are made using a new nonlinear optical phase-modulation spectroscopy technique. The measured results of T-1 as a function of magnetic field and temperature are best explained in terms of the spin relaxation by the phonoti-assisted Dresselhaus spin-orbit scattering. T-1 approaches 34 mu s at zero magnetic field at 4.5 K. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：381 / 385
页数：5
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