Vortex state in isotropic p-wave superconductors in the vicinity of upper critical field
Department of Physics and Astronomy,
University of Southern California,
Los Angeles, CA90089-0484, USA
Accepted: 5 November 1998
Making use of the superconducting order parameter in the vicinity of in quasi-2D p-wave superconductors in a magnetic field parallel to the c-axis, we study the effect of impurity on the upper critical field and the vortex lattice structure and the quasi-particle density of states in the vortex lattice state. We find that the square vortex lattice is very robust even in the presence of impurity. The quasi-particle density of states exhibits the strong twofold symmetry characteristic to the p-wave superconductivity, which will be accessible by STM for example. We expect that the present result applies to the vortex state in Sr2RuO4 and (TMTSF)2ClO4, etc.
PACS: 74.60.Ec – Mixed state, critical fields, and surface sheath / 74.70.Kn – Organic superconductors / 74.72.Yg – Other compounds
© EDP Sciences, 1999