Dynamical localization delocalization transition in the infinite-dimensional Hubbard-Holstein model

被引：8

作者：

Hotta, T

Takada, Y

机构：

[1] Institute for Solid State Physics, University of Tokyo, Tokyo, 106, 7-22-1 Roppongi, Minato-ku

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.76.3180

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study electron localization due to the confinement by local phonons occurring at finite energies by using an expansion theory with respect to the effective hopping integral A from the limit of zero bandwidth in infinite-dimensional electronic systems. The localization signaled by the divergence in the self-energy is found to exist for sufficiently small A, but it disappears for larger A, indicating a dynamical localization-delocalization transition.

引用

页码：3180 / 3183

页数：4

共 12 条

[1] Application of Gutzwiller's variational method to the metal-insulator transition [J].