Anisotropic exchange splitting of excitonic levels in small quantum systems

被引：22

作者：

Goupalov, SV ^{[1
]}

Ivchenko, EL ^{[1
]}

Kavokin, AV ^{[1
]}

机构：

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

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1998年 / 23卷 / 06期

关键词：

exciton; exchange; fine structure;

D O I：

10.1006/spmi.1996.0367

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A theory of long-range exchange interaction between an electron and a hole in a zero-dimensional exciton has been developed taking into account the retardation effect. It has been shown that, for the anisotropic localizing potential in bulk semiconductors or semiconductor nanostructures, the long-range interaction leads to a splitting of radiative localized-exciton levels. Polarization of split sublevels is determined by the shape of;he exciton envelope function. For excitons localized in quantum wells, typical splitting is expected to be tens of mu eV in agreement with recent experiments, (C) 1998 Academic Press Limited.

引用

页码：1205 / 1209

页数：5

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