POLARIZED FAR-INFRARED AND RAMAN-SPECTRA OF BI2CUO4 SINGLE-CRYSTALS

被引：15

作者：

POPOVIC, ZV

KLICHE, G

KONSTANTINOVIC, MJ

REVCOLEVSCHI, A

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH, W-7000 STUTTGART 80, GERMANY

[2] UNIV PARIS 11, CHIM SOLIDES LAB, CNRS, UA 446, F-91405 ORSAY, FRANCE

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1992年 / 4卷 / 49期

关键词：

D O I：

10.1088/0953-8984/4/49/036

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present the polarized far-infrared and Raman spectra of Bi2CuO4 single crystals at 300 and 10 K in the spectral range from 30 to 650 cm-1. All infrared-active modes (10E(u) + 5A2u) as well as 21 Raman-active modes were observed. At low temperatures, for x'y' and x'z polarizations, new structure appears which we assigned as a two-magnon mode. The assignment of the observed vibrational modes is given according to Cartesian symmetry coordinates and a preliminary force constant calculation on the basis of a rigid-ion model.

引用

页码：10085 / 10092

页数：8

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