Tunneling of spin polarized excitons in double quantum wells of Cd1-xMnxTe and CdTe

被引：18

作者：

Kayanuma, K

Shirado, E

Debnath, MC

Souma, I

Permogorov, S

Oka, Y

机构：

[1] Tohoku Univ, Res Inst Sci Measurements, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Japan Sci & Technol Corp, CREST, Kawaguchi 3320012, Japan

来源：

PHYSICA E | 2001年 / 10卷 / 1-3期

关键词：

magnetic semiconductors; quantum wells; tunneling; spins;

D O I：

10.1016/S1386-9477(01)00103-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Spin-polarized tunneling of excitons has been studied by the transient exciton luminescence in magnetic field in the double quantum well system. The double quantum well was composed of the wells of diluted magnetic semiconductor and nonmagnetic semiconductor. The spin-polarized excitons tunnel from the magnetic quantum well to the nonmagnetic quantum wells through the barrier, and their spins are conserved. The tunneling time of the exciton spins was determined from the circular polarization degree of the photoluminescence of the quantum well excitons. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：295 / 299

页数：5

共 7 条

[1] Spin-flip rate of excitonic magnetic polarons in Cd1-xMnxTe/Cd1-yMgyTe quantum wells [J].