1:3 Peierls系统中的极化子

在可约数为3的一维Peierls系统中,我们运用SSH模型的连续极限得到了极化子解。在弱耦合极限下,这一极化子解严格满足离子位移序参量的自洽条件。我们给出了极化子的形成能和特征宽度,并讨论了可约数为M的一般情况下可能的孤子激发。 关键词：

POLARONS IN A 1:3 PEIERLS SYSTEM

Using the continuum limit of SSH model, we find explicitly the "polaron" soliton in one-dimensional Peierls system with commensurability-3. It is shown within the weak-coupling limit that the polaron solution satisfies exactly the self-consistent condition for the order parameter of the ionic displacements. The creation energy and characteristic width of the polaron are given. Furthermore, the possible soliton excitations in the general commensurability-M case are discussed.