THE PRESSURE-DEPENDENCE OF RAMAN-ACTIVE LIBRON MODES IN CRYSTALLINE C-60

被引：11
|
作者：
HOROYSKI, PJ
WOLK, JA
THEWALT, MLW
机构：
[1] Dept. of Physics, Simon Fraser University, Burnaby
来源：
SOLID STATE COMMUNICATIONS | 1995年 / 93卷 / 07期
关键词：
FULLERENES; OPTICAL PROPERTIES; PHONONS;
D O I：
10.1016/0038-1098(94)00831-V
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The pressure dependence of the Raman active intermolecular modes of crystalline C-60 has been determined up to 15.2 kbar. Two distinct librational modes are seen to shift to higher frequency with increasing pressure at the rates of 0.37 cm(-1)/kbar and 0.52 cm(-1)/kbar. Comparison of the pressure induced shifts with the temperature evolution of the libron modes allows the latter to be separated into phonon-population and volume driven effects which reveal that the libron mode frequencies contain a strong dependence on the librational amplitudes.
引用
收藏
页码：575 / 578
页数：4
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