ANOMALOUS ANGULAR-DEPENDENCE OF E-MODE SPLITTING IN RAMAN-SPECTRA OF ZNP2 AND CDP2 UNIAXIAL GYROTROPIC CRYSTALS CAUSED BY SPATIAL-DISPERSION

被引：8

作者：

GARASEVICH, SG

SLOBODYANYUK, AV

YANCHUK, ZZ

机构：

[1] Department of Physics, Kiev University, 252127 Kiev

来源：

PHYSICS LETTERS A | 1995年 / 197卷 / 03期

关键词：

D O I：

10.1016/0375-9601(94)00932-F

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It was found that the dependence of the splitting of low frequency E-doublets in Raman spectra of strongly gyrotropic tetragonal ZnP2 and CdP2 crystals on the angle between the direction of the phonon wave vector q and the optical axis is completely different from the well known angular dependence of the LO-TO splitting of the double degenerate mode in uniaxial crystals. This splitting may be treated as entirely caused by spatial dispersion of first order in q.

引用

页码：238 / 242

页数：5

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