SPIN DYNAMICS IN III-V/II-VI: Mn HETEROVALENT QUANTUM WELLS

被引：0
|
作者：
Toropov, A. A. [1 ]
Terent'ev, Ya. V. [1 ]
Lebedev, A. V. [1 ]
Kop'ev, P. S. [1 ]
Ivanov, S. V. [1 ]
Koyama, T. [2 ]
Nishibayashi, K. [2 ]
Murayama, A. [2 ]
Oka, Y. [2 ]
机构：
[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia
[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2009年 / 23卷 / 12-13期
关键词：
Spin relaxation; diluted magnetic semiconductors; localized excitons; RELAXATION; INJECTION;
D O I：
10.1142/S0217979209062293
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the spectroscopic magnetooptical studies of spin dynamics in diluted magnetic semiconductor (DMS) GaAs/AlGaAs/ZnSe/ZnCdMnSe heterovalent double quantum wells (QW). The transients of circularly polarized photoluminescence in an external magnetic field are detected in the structures with different widths of the GaAs QW. The analysis of the data, performed within the rate-equation model, has allowed separate estimations of the spin relaxation rate of localized electrons and holes. The spin flip of the electrons confined in the DMS ZnCdMnSe QW is faster than 20 ps, whereas the spin flip of the heavy hole localized in the GaAs QW is as long as similar to 9 ns. The long spin flip of the holes is presumably governed by their strong 3-dimensional localization.
引用
收藏
页码：2739 / 2749
页数：11
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