Fluctuation exchange study of singlet and triplet superconductivity in 2D and 3D single-band Hubbard model

被引：0
|
作者：
Arita, R [1 ]
Kuroki, K [1 ]
Aoki, H [1 ]
机构：
[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2001年 / 62卷 / 1-2期
基金：
日本学术振兴会;
关键词：
superconductors; superconductivity; magnetic properties;
D O I：
10.1016/S0022-3697(00)00138-4
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In order to identify the most favorable situation for superconductivity in the repulsive single-band Hubbard model, we have studied instabilities for d-wave pairing mediated by antiferromagnetic spin fluctuations and p-wave pairing mediated by ferromagnetic fluctuations with the fluctuation exchange approximation in both two dimensions and three dimensions. By systematically varying the band filling and the band structure, we have shown that: (i) pairing instability is stronger in two dimensions than in three dimensions: and (ii) p-wave pairing is much weaker than d-wave pairing. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：249 / 251
页数：3
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