EXCITON OSCILLATOR STRENGTH IN MAGNETIC-FIELD-INDUCED SPIN SUPERLATTICES CDTE (CD,MN)TE

被引：106
|
作者：
IVCHENKO, EL [1 ]
KAVOKIN, AV [1 ]
KOCHERESHKO, VP [1 ]
POSINA, GR [1 ]
URALTSEV, IN [1 ]
YAKOVLEV, DR [1 ]
BICKNELLTASSIUS, RN [1 ]
WAAG, A [1 ]
LANDWEHR, G [1 ]
机构：
[1] UNIV WURZBURG,INST PHYS,W-8700 WURZBURG,GERMANY
来源：
PHYSICAL REVIEW B | 1992年 / 46卷 / 12期
关键词：
D O I：
10.1103/PhysRevB.46.7713
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Resonance-reflectivity data on CdTe/(Cd,Mn)Te quantum wells and superlattices are analyzed to obtain the exciton longitudinal-transverse splitting or oscillator strength as a function of the layer widths and/or the band offsets altered by externally applied magnetic fields. A nonlocal-dielectric-response theory for single quantum wells and the concept of an optically homogeneous dielectric medium formulated for periodic structures are developed. Strong effects of the magnetic-field-induced type-I-type-II transition and the spin-superlattice formation for holes on the exciton oscillator strength are found to be in agreement with our calculations.
引用
收藏
页码：7713 / 7722
页数：10
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