Volume 45, Number 1, January I 1999
|Page(s)||71 - 75|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
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
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