Horizontal line nodes in superconducting Sr2RuO4

Details Horizontal line nodes in superconducting Sr2RuO4 Horizontal line nodes in superconducting Sr2RuO4

2003-12-28

arxiv.org/abs/cond-mat/0312664v1

Physics

Condensed Matter

Superconductivity

9 pages, 6 figures

Scientific paper

10.1002/pssb.200301978

We analyze the possibilities of triplet pairing in Sr2RuO4 based upon an idea of interlayer coupling. We have considered two models differing by the effective interactions. In one model the quasi-particle spectra have horizontal line nodes on all three Fermi surface sheets, while in the other the spectra have line or point nodes on the alpha and beta sheets and no nodes on the gamma sheet. Both models reproduce the experimental heat capacity and penetration depth results, but the calculated specific heat is sightly closer to experiment in the second solution with nodes only on the alpha and beta sheets.

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