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Wiedemann-Franz violation in the vortex state of a d-wave superconductor

Wonkee Kim·F. Marsiglio·J. P. Carbotte
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Abstract

We show that the Wiedemann-Franz law is violated in the vortex state of a d-wave superconductor at zero temperature. We use a semiclassical approach, which includes the Doppler shift on the quasiparticles as well as the Andreev scattering from a random distribution of vortices. We also show that the vertex corrections to the electrical conductivity due to the anisotropy of impurity scattering become unimportant in the presence of a sufficiently large magnetic field.

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Wonkee Kim, F. Marsiglio, J. P. Carbotte. 2003-04-09. Wiedemann-Franz violation in the vortex state of a d-wave superconductor. https://doi.org/10.1016/j.physc.2004.03.121

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