| 弱电场下电子极化子与空穴极化子的散射 |
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| 引用本文： | 李海宏,;李冬梅,;刘文,;钱娜娜.弱电场下电子极化子与空穴极化子的散射[J].烟台师范学院学报(自然科学版),2008(3):233-235. |
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| 作者姓名： | 李海宏 ;李冬梅 ;刘文 ;钱娜娜 |
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| 作者单位： | [1]济宁学院物理系,山东曲阜273155; [2]山东大学物理学院,济南250100; [3]潍坊广文中学,山东潍坊261000 |
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| 基金项目： | 国家自然科学基金（10574082）;山东省自然科学基金（Z2005A01）;新世纪大学优秀人才项目（10574037） |
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| 摘 要： | 基于紧束缚的Su-Schrieffer-Heeger（SSH）模型，利用非绝热的动力学方法，研究了弱电场下基态非简并聚合物中电子极化子和空穴极化子的散射．研究发现，体系最终形成一个中性激子态，由于电场力与电声耦合之间的竞争，形成的激子呈现了一个正反极化振荡的现象，体系最终达到一个动态的平衡．
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| 关 键 词： | 电子极化子 空穴极化子 有机共轭聚合物 非绝热动力学 |
Scattering of Electron and Hole Polarons Under Weak Electric Field |
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| Institution: | LI HAI-hong, LI DONG-mei, LIU Wen, QIAN Na-na( Department of Physics, Jining University, Qufu 273155, China ;2. School of Physics, Shandong University, Jinan 250100, China; 3. Guangwen middle school in Weifang, Weifang 261000, China) |
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| Abstract: | Based on the tight-binding Su-Schrieffer-Heeger （SSH） model and a nonadiabatic dynamical evolution method, the scattering of electron and hole polarons in the nondegenerate polymers under a weak electric field is studied. It is found that the system will form a neutral exciton state. Due to the competition between the electrical force and the electron-phonon couplings, the formed exciton presents an oscillation between positive and negative polarization. The system reaches a dynamic balance finally. |
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| Keywords: | electron polaron hole polaron organic conjugated polymer nondiabatic dynamics |
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