In this paper, we will choose a polyacetylene loop as a molecular bridge, based on Landauer-Buttiker transport theory and tight-binding approximation, we .

• 首先，在两端模型中，我们介绍了当导线与聚乙炔环间的耦合较弱时，电导随能量的突变明显，电子的遂穿效应显得更为显著。