Effect of a magnetic field on energy transfer of band states to the Mn2+ 3d shell in the CdMgTe matrix with ultrathin CdMnTe layers

被引：3

作者：

Agekyan, V. F. ^{[1
]}

Holtz, P. O. ^{[2
]}

Karczewski, G. ^{[3
]}

Moskalenko, E. S. ^{[4
]}

Serov, A. Yu. ^{[1
]}

Filosofov, N. G. ^{[1
]}

机构：

[1] St Petersburg State Univ, Fock Inst Phys, St Petersburg 198904, Russia

[2] Linkoping Univ, IFM Mat Phys, SE-58183 Linkoping, Sweden

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[4] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

PHYSICS OF THE SOLID STATE | 2010年 / 52卷 / 01期

关键词：

RECOMBINATION PROCESSES; QUANTUM-WELLS; EXCITON; ZNMNTE; DOTS;

D O I：

10.1134/S1063783410010051

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of external magnetic fields on two radiative (band-to-band and on-site) recombination channels in II-VI dilute magnetic semiconductors and related nanostructures has been considered. The 3d on-site emission of manganese ions in CdMgTe matrices containing periodic inclusions of CdMnTe narrow-band-gap layers with thicknesses of 0.5, 1.5, and 3.0 monolayers has been investigated in magnetic fields of up to 6 T. It has been shown that, in a magnetic field, luminescence of manganese ions weakens because of the decrease in the rate of spin-dependent excitation transfer from band states to the Mn2+ 3d shell. The maximum suppression of 3d luminescence has been observed in the matrix with a CdMnTe layer 3.0 monolayers thick. This indicates that the main factor responsible for the energy transfer is the internal field near the CdMnTe layers, which determines the magnetic splitting and spin polarization of band states.

引用

页码：27 / 31

页数：5

共 47 条

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