# Triplet Pairing Superconductivity Induced by Short-Range Ferromagnetic Correlations in Sr$\_2$RuO$\_4$

Source: [Triplet Pairing Superconductivity Induced by Short-Range Ferromagnetic Correlations in Sr$\_2$RuO$\_4$](<https://www.sota2.com/research/paper/68fa26f72c2a3760193bef93>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T11:43:35.428Z

Authors: K. Hoshihara, K. Miyake

Published: 2005-08-05T11:11:15.000Z

## Abstract

The microscopic origin of triplet superconductivity in Sr$\_2$RuO$\_4$ is discussed, paying attention to the role of Coulomb interaction, $U\_{pp}$, at the O site. It is shown on the $d$-$p$ model that $U\_{pp}$ induces a ferromagnetic exchange interaction between "d-electrons" (molecular orbital with $d\_{xy}$-symmetry) at adjacent Ru sites, leading to short-range ferromagnetic correlations and promoting Cooper pairing with ($\\sin p\_x\\pm\\ii\\sin p\_y$)-symmetry on the $\\gamma$-band. The reason why such ferromagnetic correlations work effectively may be traced back to the fact that the level of 4d-electrons at Ru sites is relatively low and located near that of $2p$-electrons at O sites.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/0508147>)

[PDF](<https://arxiv.org/pdf/cond-mat/0508147.pdf>)