2-DIMENSIONAL EXCITON MAGNETIC POLARON IN CDTE CD1-XMNXTE QUANTUM-WELL STRUCTURES

被引:65
|
作者
YAKOVLEV, DR [1 ]
OSSAU, W [1 ]
LANDWEHR, G [1 ]
BICKNELLTASSIUS, RN [1 ]
WAAG, A [1 ]
SCHMEUSSER, S [1 ]
URALTSEV, IN [1 ]
机构
[1] AF IOFFE PHYSICOTECHN INST,ST PETERSBURG 194021,USSR
关键词
D O I
10.1016/0038-1098(92)90401-T
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We report the first investigation of two-dimensional magnetic polarons formed from excitons localized in very thin nonmagnetic CdTe quantum wells confined by Cd1-XMnXTe diluded-magnetic-semiconductor barriers. Analysis of the Stokes shift of the exciton luminescence peak under resonance excitation, which is a dramatically decreasing function of temperature and magnetic field, allows us to determine the magnetic polaron energy. The polaron energy measured as a function of quantum well width is found to be 25 meV in a 6 angstrom thick quantum well and to vanish in wells thicker than 30 angstrom.
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收藏
页码:29 / 32
页数:4
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