ONE-PHONON AND 2-PHONON RAMAN-SCATTERING IN TERNARY PHOSPHIDES ZNSIP2, ZNGEP2, CDSIP2

被引：25

作者：

GORBAN, IS

GORYNYA, VA

LUGOVOI, VI

KRASNOLOB, NP

SALIVON, GI

TYCHINA, II

机构：

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1979年 / 93卷 / 02期

关键词：

D O I：

10.1002/pssb.2220930210

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

One‐ and two‐phonon Raman scattering (RS) of orientated single crystals of ZnSiP2, ZnGeP2, and CdSiP2 are investigated. For the first time in ZnSiP2 the lattice vibrations B2(L/T) 146/145 and B1 466 cm−1 are observed, and the values of L–T splitting of polar modes are determined. It is concluded that in crystals of ZnGeP2, ZnSiP2, and CdSiP2 a completely symmetric component of the second‐order RS spectra is formed by overtones and gives the distribution of the phonon state density of the lattice of these compounds. This distribution is determined in the main by the points Λ, T, N of Brillouin zone and has the general form for all compounds investigated. An estimation is given of the frequencies ofinactive A2‐phonons in ZnGeP2, ZnSiP2, and CdSiP2. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA

引用

页码：531 / 538

页数：8

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