The angular-dependent specific heat, Hall superfluid density, etc. 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: 12 September 2001
Within the semi-classical approximation, we study the thermodynamic properties of the vortex state in d-wave superconductors when a magnetic field is applied parallel to the conducting plane, specially for low field and low temperature, and . We find that the specific heat, the spin susceptibility, the superfluid density and the nuclear spin relaxation rate depend on the angle between the magnetic field and the a-axis and exhibit the scaling behavior in terms of . We predict also a substantial Hall superfluid density (i.e. the supercurrent component perpendicular to the vector potential ). Further the Hall superfluid density decreases slowly with increasing temperature.
PACS: 74.20.Fg – BCS theory and its development / 74.25.Bt – Thermodynamic properties
© EDP Sciences, 2001