The role of spin-orbit coupling for the superconducting state in
Yukawa Institute for Theoretical Physics, Kyoto University - Kyoto 606-8502, Japan
Accepted: 29 November 1999
The odd-parity spin-triplet Cooper pairing states show a six-fold degeneracy for a quasi–two-dimensional electron system. In this article we show how spin-orbit coupling can lift this degeneracy for taking the band structure based on the three relevant -orbitals of the Ru-ions into account. The stabilized state depends on the relative strength of the pairing interaction. We show that under reasonable assumptions the chiral pairing state is favored against the others.
PACS: 71.70.Ej – Spin orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect / 74.25.Dw – Superconductivity phase diagrams
© EDP Sciences, 2000