Vortex States for Nearly B||ab in a Chiral p-Wave Superconductor

Abstract

We study vortex states when a magnetic field is applied nearly parallel to the ab-plane in a chiral p-wave superconductor with large anisotropy ratio of ab and c as in Sr 2 RuO 4 . After calculating the spatial structure of the pair potentials and the internal magnetic field in the vortex lattice state on the basis of Eilenberger theory, we estimate the field dependence of the pair potentials and the flux line lattice form factors. We discuss how the chiral-nonchiral transition vanishes and how the transverse field components of internal fields change, when a magnetic field is slightly tilted from the ab plane. In the chiral state, the transverse components do not vanish even for exactlly parallel fields to the ab plane due to the internal angular momentum of chiral p-wave pairing.