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Relation between Vortex Excitation and Thermal Conductivity in Superconductors

Mitsuaki Takigawa·Masanori Ichioka·Kazushige Machida
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Abstract

Thermal conductivity $κ_{xx}(T)$ under a field is investigated in $d_{x^2-y^2}$-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 $κ_{xx}(T)$ 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.

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Mitsuaki Takigawa, Masanori Ichioka, Kazushige Machida. 2002-04-08. Relation between Vortex Excitation and Thermal Conductivity in Superconductors. https://doi.org/10.1140/epjb%2Fe2002-00159-0

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