基于一维紧束缚SSH模型,讨论了电子晶格耦合二阶项对极化子静态和动力学性质的影响:随着二阶项系数β的增加,二聚化常数越来越大,能隙越来越宽,极化子的局域性不断增强,但带宽几乎没有变化.动力学方面由于二阶项的引入增强了电声相互作用,随着β值的增大,极化子的运动速度减小,并且极化子的解离电场不断增大. Based on the one-dimensional tight-binding SSH model, the influence of the second-order term of the electron lattice coupling on the static and dynamic properties of the polaron is discussed. As the second-order coefficient β increases, the dimerization constant becomes larger and larger, More and more broadly, the localization of polaron is increasing, but there is almost no change in the bandwidth.As for the second-order term, the electro-acoustic interaction is enhanced by the second-order term in kinetics, and as the β value increases, the movement of the polaron The velocity decreases and the dissociation field of the polaron increases.