Fine structure of excited excitonic states in quantum disks

被引：6

作者：

Glazov, M. M. ^{[1
]}

Ivchenko, E. L. ^{[1
]}

Baltz, R. V. ^{[2
]}

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

机构：

[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

[2] Univ Karlsruhe, D-76128 Karlsruhe, Germany

来源：

INTERNATIONAL JOURNAL OF NANOSCIENCE, VOL 6, NOS 3 AND 4 | 2007年 / 6卷 / 3-4期

关键词：

quantum dots; excitons; exchange interaction; exciton-phonon coupling;

D O I：

10.1142/S0219581X07004687

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report on a theoretical study of the fine structure of excited excitonic levels in semiconductor quantum disks. A particular attention is paid to the effect of electron-hole long-range exchange interaction. We demonstrate that even in the axisymmetric quantum disks, the exciton P-shell is split into three sublevels. The analytical results are obtained in the limiting cases of strong and weak confinement. A possibility of exciton spin relaxation due to the resonant LO-phonon-assisted coupling between the P and S shells is discussed.

引用

页码：265 / +

页数：2

共 6 条

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