LOCALIZED VIBRATIONAL-MODES IN AN ANHARMONIC CHAIN

被引：8
|
作者：
WANG, SF
机构：
[1] Department of Physics, Xi'an Jiaotong University, Xi'an
来源：
PHYSICS LETTERS A | 1993年 / 182卷 / 01期
关键词：
D O I：
10.1016/0375-9601(93)90061-4
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A new way to study localized vibrational (LV) modes in an anharmonic chain is presented. The result obtained in this way shows that the LV modes degenerate into the harmonic mode at the frequency corresponding to the top of the phonon band. The conclusion that the existence of the LV mode is independent of the magnitude of the anharmonic force constant is proved exactly.
引用
收藏
页码：105 / 108
页数：4
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