SECOND-ORDER RAMAN-SPECTRA AND LATTICE-DYNAMICS IN ALAS

被引：25

作者：

AZUHATA, T

SOTA, T

SUZUKI, K

机构：

[1] WASEDA UNIV,ADV RES CTR SCI & ENGN,SHINJUKU KU,TOKYO 169,JAPAN

[2] WASEDA UNIV,KAGAMI MEM LAB MAT SCI & TECHNOL,SHINJUKU KU,TOKYO 169,JAPAN

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1995年 / 7卷 / 09期

关键词：

D O I：

10.1088/0953-8984/7/9/018

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have re-examined the second-order Raman spectra in a thick AlAs layer grown on a GaAs substrate by polarized Raman spectroscopy. So as to reproduce the spectra, the force constants have been refined and then the phonon dispersion has been calculated within a modified version of the adiabatic bond-charge model. We present phonon frequencies at critical points, e.g. Gamma, X, L and W, and the force constants for AlAs. The phonon dispersion is compared with a previous ab initio result and it is shown that the procedure presented herein is useful. A brief discussion is also given of the analysis of the second-order Raman spectra of AlSb

引用

页码：1949 / 1957

页数：9

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