CHARGE-ORDERED SOLUTION OF THE HALF-FILLED HUBBARD-MODEL

被引：11

作者：

RICHTER, A ^{[1
]}

MIZIA, J ^{[1
]}

机构：

[1] HIGHER PEDAGOG SCH,DEPT PHYS,PL-30084,POLAND

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1979年 / 92卷 / 02期

关键词：

D O I：

10.1002/pssb.2220920222

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Within the functional integral treatment it is shown, that local magnetic moments for the conventional half‐filled Hubbard model with repulsive correlation correspond to charge densities for an attractive correlation. Inclusion of electron—phonon interaction leads to a renormalization of repulsion energy and to a charge‐ordered state for a negative effective Ũ. Fluctuations in the effective charge field turn out to be important in this region. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA

引用

页码：519 / 523

页数：5

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