摘要
将聚苯胺等一类聚合物简化成一维复式线性链 ,讨论了这一类聚合物仅含一个点缺陷时的振动模。考虑到点缺陷附近弹性恢复力常数的变化 ,预期了局域模的出现 ,说明了模的局域化程度 ,包括模的频移及振动本征矢的分布情况与质量缺陷程度、力常数改变程度的关系。
A kind of polymer is simplified to be an one-dimensional compound chain, the localized vibration modes caused by one defect in this kind of polymer are discussed. Considering the change of interaction constant near the defect, the appearance of lozalized modes is expected, and the degree of the modes, including the frequency shifting, as well as the relation between the distribution of eigenvector and the degree of quality defect and change of the interaction constant are explained.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2003年第4期553-560,共8页
Journal of Atomic and Molecular Physics
关键词
质量缺陷
力常数改变
局域模
Quality defect
Change of interaction constant
Localized vibration modes