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Relation between Vortex Excitation and Thermal Conductivity in Superconductors
Thermal conductivity under a field is investigated in
-wave superconductors and isotropic s-wave superconductors by the
linear response theory, using a microscopic wave function of the vortex lattice
states. To study the origin of the different field dependence of
between higher and lower temperature regions, we analyze the
spatially-resolved thermal conductivity around a vortex at each temperature,
which is related to the spectrum of the local density of states. We also
discuss the electric conductivity in the same formulation for a comparison.Comment: 9 pages, 11 figures, to appear in European Physical Journal
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