库仑作用对顺式聚乙炔中极化子和双极化子稳定性的影响

COULOMB EFFECTS ON THE STABILITY OF BIPOLARONSAND POLARONS IN CISPA

采用包括库仑长程相互作用的扩展的紧束缚模型，研究了一维强关联体系—顺式聚乙炔（ｃｉｓ－ＰＡ）中极化子和双极化子的稳定性．发现库仑相互作用较弱时，双极化子稳定；库仑相互作用较强时，极化子稳定．

オhe stability of polarons and bipolarons in cisPA has been studied theoretically by adopting the tightbinding model including long range Coulomb interactions.It was concluded that at weaker Coulomb interactions,bipolarons are more stable;at stronger Coulomb interactions,polarons are more stable.