INTERFACE PHONONS IN GAAS ALAS SUPERLATTICES STUDIED BY MICRO-RAMAN SPECTROSCOPY

被引:39
|
作者
HUBER, A [1 ]
EGELER, T [1 ]
ETTMULLER, W [1 ]
ROTHFRITZ, H [1 ]
TRANKLE, G [1 ]
ABSTREITER, G [1 ]
机构
[1] TECH UNIV MUNICH,WALTER SCHOTTKY INST,W-8046 GARCHING,GERMANY
关键词
5;
D O I
10.1016/0749-6036(91)90248-P
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
In GaAs/AlAs superlattices there exist so-called interface phonons with frequencies in between those of the bulk TO and LO phonon modes. Using micro-Raman spectroscopy we were able to study the energy dispersion of these interface phonons as a function of the in-plane momentum transfer qII (0≤qII≤8×105 cm-1). The results are compared to calculations based on the dielectric continuum model. © 1991.
引用
收藏
页码:309 / 311
页数:3
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