电子相互作用对聚乙炔中极化子电子态的影响

EFFECTS OF ELECTRON-ELECTRON INTERACTION ON THE ELECTRONIC STATES OF POLARON IN POLY ACETYLENE

本文根据SSH和Hubbard模型研究了电子相互作用对聚乙炔中极化子的电子态的影响。结果发现:1.电子相互作用使能隙中出现了一个新的电子束缚态,它是靠近价带的浅能级;2.电子相互作用使得价带下面的一个电子束缚态消失,同时在导带上面出现了两个电子束缚态。

We studied the effects of electron-electron interaction on the electronic states of the-polaron in polyacetylene, based on the SSH and Hubbard models. The results show: 1. There emerges a new bound state in the gap caused by the e-e interation, that is a shallow discrete level near the top of the valence band. 2. The bound state below the bottom of the valence band disappears, and meanwhile, two bound states appear above the top of the conduction band.