Theory of Raman light scattering by nanocrystal acoustic vibrations

被引：27

作者：

Gupalov, SV ^{[1
]}

Merkulov, IA ^{[1
]}

机构：

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

来源：

PHYSICS OF THE SOLID STATE | 1999年 / 41卷 / 08期

关键词：

D O I：

10.1134/1.1130997

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A theory of Raman scattering of light by acoustic phonons in spherical nanocrystals of zinc-blende and wurtzite semiconductors has been developed with the inclusion of the complex structure of the valence band. The deformation-potential approximation was used to describe the exciton-phonon interaction. It is shown that this approximation allows only Raman scattering processes involving spheroidal acoustic phonons with a total angular momentum F = 0 or 2. The effect of phonon quantum confinement on linewidth in Raman scattering spectra and scattered polarization is analyzed. An expression for the shape of the spectral line corresponding to nonresonant scattering from F=0 phonons was obtained. (C) 1999 American Institute of Physics. [S1063-7834(99)02508-3].

引用

页码：1349 / 1358

页数：10

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