SPIN FLUCTUATION EFFECTS ON A QUASI-2D ITINERANT ELECTRON-SYSTEM - A MICROSCOPIC MODEL FOR THE MARGINAL FERMI-LIQUID

被引：25

作者：

CHARFIKADDOUR, S ^{[1
]}

TARENTO, RJ ^{[1
]}

HERITIER, M ^{[1
]}

机构：

[1] CNRS,PHYS MAT LAB,BELLEVUE,FRANCE

来源：

JOURNAL DE PHYSIQUE I | 1992年 / 2卷 / 10期

关键词：

D O I：

10.1051/jp1:1992251

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study a model of itinerant two-dimensional electron system exhibiting Van Hove and nesting singularities of the Fermi surface at half-filling of the band. We consider the spin fluctuation electron-electron scattering as the dominant scattering mechanism. This yields a marginal Fermi liquid behaviour at half-filling and a crossover from a normal Fermi liquid to a marginal one away from half-filling. Density of states, magnetic susceptibility, spin excitation spectrum, resistivity, thermopower and the phase diagram using BCS theory obtained by this simple model are in a qualitative agreement with high T(c) superconductors.

引用

页码：1853 / 1860

页数：8

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