Magnetic polarons in a single diluted magnetic semiconductor quantum dot

被引:128
作者
Maksimov, AA
Bacher, G [1 ]
McDonald, A
Kulakovskii, VD
Forchel, A
Becker, CR
Landwehr, G
Molenkamp, LW
机构
[1] Univ Wurzburg, D-97074 Wurzburg, Germany
[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia
来源
PHYSICAL REVIEW B | 2000年 / 62卷 / 12期
关键词
D O I
10.1103/PhysRevB.62.R7767
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Quasi-zero-dimensional magnetic polarons in single Cd0.93Mn0.07Te/Cd0.6Mg0.4Te quantum dots have been studied by photoluminescence spectroscopy. By comparing the experimental data with model calculations, the energy, the internal magnetic field, and the volume of the magnetic polarons are obtained. Moreover, the magnetic environment of the recombining electron hole pair causes a distinct broadening of the emission line (similar to 4 meV) of one diluted magnetic single quantum dot. The alignment of the Mn-spins in high magnetic fields results in a linewidth narrowing of almost one order of magnitude and the linewidth becomes comparable to that of a nonmagnetic Cd0.93Mg0.07Te/Cd0.6Mg0.4Te reference sample.
引用
收藏
页码:R7767 / R7770
页数:4
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