Landau-Fermi liquid analysis of the 2D t-t′ Hubbard model

被引：10

作者：

Frigeri, PA ^{[1
]}

Honerkamp, C ^{[1
]}

Rice, TM ^{[1
]}

机构：

[1] ETH Honggerberg, CH-8093 Zurich, Switzerland

来源：

EUROPEAN PHYSICAL JOURNAL B | 2002年 / 28卷 / 01期

关键词：

D O I：

10.1140/epjb/e2002-00200-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We calculate the Landau interaction function f (k, k') for the two-dimensional t-t' Hubbard model on the square lattice using second and higher order perturbation theory. Within the Landau-Fermi liquid framework we discuss the behavior of spin and charge susceptibilities as function of the onsite interaction and band filling. In particular we analyze the role of elastic umklapp processes as driving force for the anisotropic reduction of the compressibility on parts of the Fermi surface.

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页码：61 / 70

页数：10

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