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arXiv · cond-mat/0312665

Specific Heat of Disordered Superconductors Induced by Negative Centers

Grzegorz Litak
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Abstract

We show that superconductors with inhomogeneous order parameters can show similar features as anisotropic ones. In this paper we study the low temperature specific heat dependence in such a system and we show that the disorder associated with randomly distributed attractive centers convert the BCS temperature exponential behaviour into a power law formula. To describe superconductivity we used a random version of the negative U Hubbard model, while the disorder was treated by means of the Coherent Potential Approximation (CPA).

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Grzegorz Litak. 2003-12-28. Specific Heat of Disordered Superconductors Induced by Negative Centers. https://doi.org/10.1016/j.jmmm.2003.12.437

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