Negative magnetopolarization in thermally annealed self-assembled quantum dots

被引：9

作者：

Margapoti, E. ^{[1
]}

Worschech, L. ^{[1
]}

Mahapatra, S. ^{[1
]}

Brunner, K. ^{[1
]}

Forchel, A. ^{[1
]}

Alves, Fabrizio M. ^{[2
]}

Lopez-Richard, V. ^{[2
]}

Marques, G. E. ^{[2
]}

Bougerol, C. ^{[3
]}

机构：

[1] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany

[2] Univ Fed Sao Carlos, Dept Fis, BR-13560905 Sao Carlos, SP, Brazil

[3] CEA Grenoble, DRFMC SP2M, CEA CNRS NPSC, F-38054 Grenoble, France

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.77.073308

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A negative magnetic dispersion of the degree of circular polarization is reported for the photoluminescence of self-assembled ZnCdSe quantum dots (QDs) after a postgrowth thermal annealing (TA) treatment. Multiband calculations in the framework of the k center dot p model reveal that the phenomenon is explicable considering, apart from the changes in the confinement and composition of the QDs due to TA-induced Zn-Cd interdiffusion, the presence of extra charges of one kind within the structure.

引用

页数：4

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