TWO-DIMENSIONAL LOCALIZED MODES IN CONJUGATED POLYMERS: THE NONLINEAR ELECTRON-PHONON COUPLING EFFECT

doi:10.1088/1009-1963/9/1/008

中国物理B ›› 2000, Vol. 9 ›› Issue (1): 37-41.doi: 10.1088/1009-1963/9/1/008

TWO-DIMENSIONAL LOCALIZED MODES IN CONJUGATED POLYMERS: THE NONLINEAR ELECTRON-PHONON COUPLING EFFECT

刘英¹, 李有成¹, 李占杰², 安忠³

(1)Department of Physics, Hebei Teachers University, Shijiazhuang 050016, China; (2)Department of Physics, Huazhong University of Science and Technology, Wuhan 430073, China; (3)Department of Physics, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China

收稿日期:1999-04-20 修回日期:1999-06-19 出版日期:2000-01-15 发布日期:2005-06-10

TWO-DIMENSIONAL LOCALIZED MODES IN CONJUGATED POLYMERS: THE NONLINEAR ELECTRON-PHONON COUPLING EFFECT

An Zhong (安忠)^a, Li Zhan-jie (李占杰)^b, Liu Ying (刘英)^c, Li You-cheng (李有成)^c

^a Department of Physics, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, China ^b Department of Physics, Huazhong University of Science and Technology, Wuhan 430073, China; ^c Department of Physics, Hebei Teachers University, Shijiazhuang 050016, China;

Received:1999-04-20 Revised:1999-06-19 Online:2000-01-15 Published:2005-06-10

摘要/Abstract

摘要： The two-dimensional localized modes around a soliton have been investigated by using an extension of Su-Shrieffer-Heeger model, in which is included the nonlinear term of electron-phonon interaction. The results show that there appears an additional localized mode, and the two modes obtained in the previous work without the nonlinear term disappear. Furthermore, the frequencies of the modes are shifted and their localizations are changed after turning on the nonlinear term.

中图分类号: (Solitons)

05.45.Yv

63.20.K- (Phonon interactions) 63.20.Pw (Localized modes)

安忠, 李占杰, 刘英, 李有成. TWO-DIMENSIONAL LOCALIZED MODES IN CONJUGATED POLYMERS: THE NONLINEAR ELECTRON-PHONON COUPLING EFFECT[J]. 中国物理B, 2000, 9(1): 37-41.

An Zhong (安忠), Li Zhan-jie (李占杰), Liu Ying (刘英), Li You-cheng (李有成). TWO-DIMENSIONAL LOCALIZED MODES IN CONJUGATED POLYMERS: THE NONLINEAR ELECTRON-PHONON COUPLING EFFECT[J]. Chinese Physics, 2000, 9(1): 37-41.

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TWO-DIMENSIONAL LOCALIZED MODES IN CONJUGATED POLYMERS: THE NONLINEAR ELECTRON-PHONON COUPLING EFFECT

TWO-DIMENSIONAL LOCALIZED MODES IN CONJUGATED POLYMERS: THE NONLINEAR ELECTRON-PHONON COUPLING EFFECT

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