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RAMAN-SPECTRA OF SINGLE-CRYSTAL CUO

被引：139
作者：
HAGEMANN, H
BILL, H
SADOWSKI, W
WALKER, E
FRANCOIS, M
机构：
[1] UNIV GENEVA,DEPT PHYS MAT CONDENSEE,CH-1211 GENEVA 4,SWITZERLAND
[2] UNIV GENEVA,CRISTALLOG LAB,CH-1211 GENEVA 4,SWITZERLAND
来源：
SOLID STATE COMMUNICATIONS | 1990年 / 73卷 / 06期
基金：
瑞士国家科学基金会;
关键词：
D O I：
10.1016/0038-1098(90)90048-G
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Polarized Raman measurements on single crystals of CuO yield the symmetry assignments of the three predicted Raman active lattice modes : 297cm-1 (Ag, 344cm-1 (Bg) and 629cm-1 (Bg). These results are compared to literature data, including IR spectra. Our measurements confirm at low temperature the appearance of an additional Raman band around 240 cm-1. The temperature dependence of the linewidth of the Ag mode presents an anomalous behavior near the magnetic phase transition, suggesting the possible presence of magnon-phonon couplings in the antiferromagnetic phase. © 1990.
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页码：447 / 451
页数：5
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