OBSERVATION OF POLARON DYNAMICS IN MAGNETIC QUANTUM-WELLS

被引：83

作者：

AWSCHALOM, DD ^{[1
]}

FREEMAN, MR ^{[1
]}

SAMARTH, N ^{[1
]}

LUO, H ^{[1
]}

FURDYNA, JK ^{[1
]}

机构：

[1] UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.66.1212

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Femtosecond spectroscopic measurements of optically induced magnetization are performed on new type-II ZnTe/Cd(1-x)Mn(x)Se diluted-magnetic-semiconductor heterostructures consisting of magnetic quantum wells confined by nonmagnetic barrier layers. The formation and evolution of electron-based bound magnetic polarons in the wells is observed through static and time-domain experiments. Energy-dependent magnetic spin dynamics on ultrashort time scales are seen to vary dramatically with the degree of electronic confinement.

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页码：1212 / 1215

页数：4

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