Influence of chemical pressure effects on nonlinear thermal conductivity of intrinsically granular superconductors

Details Influence of chemical pressure effects on nonlinear thermal conductivity of intrinsically granular superconductors Influence of chemical pressure effects on nonlinear thermal conductivity of intrinsically granular superconductors

2007-08-30

arxiv.org/abs/0708.4210v1

J. Appl. Phys. 102, 066104 (2007)

Physics

Condensed Matter

Superconductivity

10 pages, 2 figures

Scientific paper

10.1063/1.2783968

Using a 2D model of capacitively coupled Josephson junction arrays (created by a network of twin boundary dislocations with strain fields acting as an insulating barrier between hole-rich domains in underdoped crystals), we study the influence of chemical pressure on nonlinear thermal conductivity (NLTC) of an intrinsically granular superconductor. Quite a substantial enhancement of NLTC is predicted when intrinsic chemoelectric field closely matches the externally produced thermoelectric field. The estimates of the model parameters suggest a realistic possibility to experimentally monitor this effect in non-stoichiometric superconductors.

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