SUPERCONDUCTIVITY IN THE EXTENDED HUBBARD-MODEL

被引：6

作者：

BULKA, BR

机构：

[1] Institute of Molecular Physics, Polish Academy of Sciences, Poznań

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1991年 / 163卷 / 01期

关键词：

D O I：

10.1002/pssb.2221630120

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The extended Hubbard model on a square lattice is considered in the framework of the mean-field formalism. A detailed analysis of the stability of the superconducting state of the s- and the d-type symmetry is performed for different band filling. Special attention is focused on the state with mixed sd-type symmetry, which may occur at an intermediate strength of interactions.

引用

页码：197 / 209

页数：13

共 29 条

[1]

Abrikosov A.A., 1987, FUNDAMENTALS THEORY

[2] LARGE-N LIMIT OF THE HEISENBERG-HUBBARD MODEL - IMPLICATIONS FOR HIGH-TC SUPERCONDUCTORS [J].