Theory on Superconductivity of CeIn3 in Heavy Fermion System

Details Theory on Superconductivity of CeIn3 in Heavy Fermion System Theory on Superconductivity of CeIn3 in Heavy Fermion System

2006-03-02

arxiv.org/abs/cond-mat/0603039v2

J. Phys. Soc. Jpn. 72 (2003) 2449

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 7 figures

Scientific paper

10.1143/JPSJ.72.2449

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.

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