Mechanism of spin-triplet superconductivity in Sr2RuO4

Details Mechanism of spin-triplet superconductivity in Sr2RuO4 Mechanism of spin-triplet superconductivity in Sr2RuO4

2000-03-03

arxiv.org/abs/cond-mat/0003046v1

J. Phys. Soc. Jpn. 69 (2000) 3505

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1143/JPSJ.69.3505

The unique Fermi surfaces and their nesting properties of Sr2RuO4 are considered. The existence of unconventional superconductivity is shown microscopically, for the first time, from the magnetic interactions (due to nesting) and the phonon-mediated interactions. The odd-parity superconductivity is favored in the $\alpha$ and $\beta$ sheets of the Fermi surface, and the various superconductivities are possible in the $\gamma$ sheet. There are a number of possible odd-parity gaps, which include the gaps with nodes, the breaking of time-reversal symmetry and $\vec{d}\parallel \hat{z}$.

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