Nonlinear response and scaling law in the vortex state of d-wave superconductors
Department of Physics, Hallym University -
Chunchon 200-702, South Korea
2 Department of Physics and Astronomy, University of Southern California Los Angeles, CA 90089-0484, USA
Accepted: 6 February 2001
We study the field dependence of the quasi-particle density of states, the thermodynamics and the transport properties in the vortex state of d-wave superconductors when a magnetic field is applied perpendicular to the conducting plane, specially for the low field and the low temperature compared to the upper critical field and transition temperature, respectively, and . Both the superfluid density and the spin susceptibility exhibit the characteristic -field dependence, while the nuclear spin lattice relaxation rate and the thermal conductivity are linear in field H. With increasing temperature, these quantities exhibit the scaling behavior in . The present theory applies to 2D f-wave superconductors as well; a possible candidate of the superconductivity is Sr2RuO4.
PACS: 74.20.Fg – BCS theory and its development / 74.25.Bt – Thermodynamic properties / 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
© EDP Sciences, 2001