Probing the pairing symmetry of Sr2RuO4 with magnetic fields

Early experiments on the pairing state of Sr2RuO4 indicated spin-triplet su perconductivity. The most likely spin-triplet state consistent with these e arly experiments is nodeless, However, recent experiments show evidence for low energy excitations. This has prompted proposals for a wide variety of spin-triplet pairing states with nodes. In this talk, the response of these possible pairing states and of fully gapped (but possibly anisotropic) pai ring states to magnetic fields are examined. (C) 2001 Elsevier Science B.V. All rights reserved.