Spin fluctuation-induced superconductivity in two and three dimensional systems

被引：68

作者：

Nakamura, S ^{[1
]}

Moriya, T ^{[1
]}

Ueda, K ^{[1
]}

机构：

[1] UNIV TOKYO, INST SOLID STATE PHYS, MINATO KU, TOKYO 106, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1996年 / 65卷 / 12期

关键词：

d-wave superconductivity; spin fluctuation; antiferromagnetic instability; strong coupling theory;

D O I：

10.1143/JPSJ.65.4026

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The strong coupling theory of unconventional superconductivity due to spin fluctuations around the antiferromagnetic instability, previously developed for two dimensional (square lattice) systems is extended to three dimensional (simple cubic lattice) systems. The values for T-c are found to be similar for the 2- and 3-dimensional systems provided the band widths and the spin fluctuation parameters take similar values. The dependences of T-c on various parameters are investigated. In both dimensions the value of T-c is most sensitive to the frequency spread of antiferromagnetic fluctuations; the larger the frequency spread the higher T-c. In the light of the present results a systematic scaling analysis is given for the values of T-c for possible spin fluctuation-induced superconductors including high-T-c cuprates, heavy electron- and organic superconductors, etc.

引用

页码：4026 / 4033

页数：8

共 36 条

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