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一维高分子链中点缺陷引起的局域模 被引量:3

The localized vibrational modes caused by a deffect in an one-dimensional polymer chain
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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
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共引文献8

同被引文献17

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