Exciton spin injection in CdTe/Cd1-xMnxTe double quantum wells

被引：0

作者：

Kayanuma, K

Debnath, AC

Souma, I

Chen, Z

Murayama, A

Kobayashi, M

Miyazaki, H

Oka, Y

机构：

[1] Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 9808577, Japan

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

[3] Tohoku Univ, Dept Appl Phys, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 2002年 / 229卷 / 02期

关键词：

D O I：

10.1002/1521-3951(200201)229:2<761::AID-PSSB761>3.0.CO;2-F

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Spin injection processes of excitons were studied by time-resolved photoluminescence in double quantum wells consisting of Cd0.95Mn0.05Te and CdTe layers. Selective excitation of the magnetic and non-magnetic wells confirms the dominant spin injection process from the magnetic well to the non-magnetic well. The exciton spin injection from the magnetic quantum well of Cd0.95Mn0.05Te arises with an injection time of 10 ps and induces a transient spin polarization with the degree of 0.20 in the non-magnetic well of CdTe. The exciton spin relaxation time in the CdTe well was found to be sufficiently longer than the exciton lifetime of 38 ps.

引用

页码：761 / 764

页数：4

共 8 条

[1] ELECTRONIC ANALOG OF THE ELECTROOPTIC MODULATOR [J].