Theory on superconductivity of CeIn3 in heavy fermion system

被引：17

作者：

Fukazawa, H ^{[1
]}

Yamada, K

机构：

[1] Himeji Inst Technol, Fac Sci, Akoh, Hyogo 6781297, Japan

[2] Kyoto Univ, Dept Phys, Kyoto 6068244, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 10期

关键词：

superconductivity; CeIn3; CeRhIn5; dimensionality; heavy fermion system; perturbation theory;

D O I：

10.1143/JPSJ.72.2449

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

On the basis of a three-dimensional Hubbard model, the superconducting mechanism of CeIn3 under high pressure is investigated by the third-order perturbation theory with respect to the on-site Coulomb interaction U. Here we propose the d-wave pairing state induced by antiferromagnetic spin fluctuations. The estimated superconducting transition temperature is lower by one order than that in the two-dimensional system for the same value of U/W (W = bandwidth). This result is consistent with the difference between CeIn3 and CeRhIn5.

引用

页码：2449 / 2452

页数：4

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