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

页码：7713 / 7722

页数：10

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