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Nonlinear Seebeck Effect in a Model Granular Superconductor

Sergei Sergeenkov
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Abstract

The change of the Josephson supercurrent density of a weakly-connected granular superconductor in response to externally applied arbitrary thermal gradient dT/dx (nonlinear Seebeck effect) is considered within a model of 3D Josephson junction arrays. For dT/dx>(dT/dx)_c, where (dT/dx)_c is estimated to be of the order of 10^4 K/m for YBCO ceramics with an average grain's size of 10 microns, the weak-links-dominated thermopower S (Seebeck coefficient) is predicted to become strongly dT/dx-dependent.

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Sergei Sergeenkov. 1998-05-28. Nonlinear Seebeck Effect in a Model Granular Superconductor. https://doi.org/10.1134/1.567701

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