%0 Journal Article
%T ELECTRON INTERACTION AND THE POLARON IN POLYMERS<br>电子相互作用和高聚物中的极化子
%A ZHANG CHUN
%A MA YUN-XHENG
%A XUN XIN
%A YE CHENG
%A <br>张淳
%A 马允胜
%A 孙鑫
%A 叶成
%J 物理学报
%D 1999
%I 
%X Currently, the extended Hubbard model, which is a good approximation only for narrow-band system, suggests that the width of polaron in polymer is heavily reduced by the electron-electron interaction. However, the polymers possess wide band, so the off-diagonal correlation cannot be neglected. We considered the effects of full electron-electron correlation on the width and the creation energy of polaron in polymer. In the case of strong screening, our results are greatly different from those of Hubbard model. This suggests that in polymer, the Hubbard model should be gone beyond.
%K 电子相互作用
%K 高聚物
%K 极化子
%K 电致发光机制
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=A9201EBDA97C296B&yid=B914830F5B1D1078&vid=B6DA1AC076E37400&iid=94C357A881DFC066&sid=3D9E2C3DB640307A&eid=F08C87DC7855E316&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=12