Interparticle interaction in spin-aligned and spin-degenerate exciton systems and magnetoplasmas in II-VI quantum wells

被引：8

作者：

Kulakovskii, VD ^{[1
]}

Tyazhlov, MG ^{[1
]}

Dite, AF ^{[1
]}

Filin, AI ^{[1
]}

Forchel, A ^{[1
]}

Yakovlev, DR ^{[1
]}

Waag, A ^{[1
]}

Landwehr, G ^{[1
]}

机构：

[1] UNIV WURZBURG,D-97074 WURZBURG,GERMANY

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.54.4981

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetoluminescence studies of highly excited undoped CdTe/Cd0.88Mn0.12Te and Cd0.97Mn0.03Te/Cd0.75Mg0.25Te quantum wells (QW's) have been carried out in magnetic fields up to 14 T at 4.2 K. Qualitatively different excitonic systems, spin aligned in (Cd,Mn)Te QW and spin depolarized in CdTe QW, have been generated. The interaction of spin-aligned excitons are found to be weakly repulsive. In contrast, an additional well pronounced emission line M has been found to appear at approximately 5 meV below the excitonic line in the spectra of the spin-degenerate system. This line is assigned to the emission of excitonic molecules consisting of excitons with different spins. Finally, we have shown that the renormalization of Landau-level transitions in dense electron-hole magnetoplasmas with several occupied Landau levels depends on their spin state, it is markedly weaker in the spin-polarized plasmas.

引用

页码：4981 / 4987

页数：7

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