From the atomic limit to a metal-insulator transition in the Hubbard model

被引：24

作者：

Craco, L

Gusmao, MA

机构：

[1] Instituto de Física, Universidade Federal Do Rio Grande Do Sul

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.52.17135

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Starting from the exact solution of the Hubbard model in the atomic limit, and treating the hopping term as a perturbation by means of a diagram technique, we discuss the electronic structure of the model in some simple approximations. We show that a metal-insulator transition is obtained above a critical value of the on-site Coulomb interaction in a self-consistent evaluation of the one-particle Green's function to one-loop order. A relationship with results in infinite dimensions is briefly discussed.

引用

页码：17135 / 17142

页数：8

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