The unconventional superconductivity of Sr{sub 2}RuO{sub 4}
The authors review the evidence for unconventional superconductivity in Sr{sub 2}RuO{sub 4}; the pairing in this material is certainly non-s-wave, and most of the current observations can be accounted for by a particular p-wave state, which is doubly degenerate and breaks time-reversal symmetry. The observations of the flux lattice by small-angle neutron scattering contribute to this picture. The square flux lattice and the intensity of the diffracted signal indicate that superconductivity resides primarily on the {gamma} sheet of the Fermi surface, which is derived from the Ru--d{sub xy} orbitals. This is in agreement with the orbital-dependent p-wave scenario. Furthermore, the shape of the flux lines derived from these measurements is strongly indicative of a two-component order parameter.
- Research Organization:
- Univ. of Birmingham (GB)
- OSTI ID:
- 20015353
- Journal Information:
- Journal of Low Temperature Physics, Vol. 117, Issue 5-6; Conference: International Conference on Physics and Chemistry of Molecular and Oxide Superconductors, Stockholm (SE), 07/28/1999--08/02/1999; Other Information: PBD: Dec 1999; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
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