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.
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页码：197 / 209
页数：13
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