POLAR OPTICAL MODES IN GAAS-ALAS SUPERLATTICES

被引：11

作者：

PEREZALVAREZ, R ^{[1
]}

VELASCO, VR ^{[1
]}

GARCIAMOLINER, F ^{[1
]}

机构：

[1] CSIC,INST CIENCIA MAT,E-28006 MADRID,SPAIN

来源：

PHYSICA SCRIPTA | 1995年 / 51卷 / 04期

关键词：

D O I：

10.1088/0031-8949/51/4/015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The normal modes of GaAs-AlAs superlattices are studied analytically by assuming that each constituent slab is perfectly rigid for the mechanical vibrations with the normal frequencies of the other one. This, which is a very good approximation for GaAs-AlAs, effects a considerable simplification and allows for an analytical study in terms of explicit basis functions which incorporate the symmetries of different modes. An application is made to a 12-12 superlattice. The results display the type of anisotropy of the modes near the zone centre found in micro-Raman experiments.

引用

页码：526 / 530

页数：5

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