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arXiv · 1407.3424

Phenomenological correlations in high-temperature superconductors

Miguel C. N. Fiolhais·Joseph L. Birman
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Abstract

An interpretation of the quadratic parameter of the Ginzburg-Landau theory of superconductivity is presented in this paper. The negative term in the potential, which allows the spontaneous symmetry breaking, is interpreted as a direct contribution from the energy gap at the Fermi surface to the effective potential. As a result, in the London approximation of the Ginzburg-Landau theory for type-II superconductors, a strong correlation is predicted and observed between the upper critical field at zero kelvin and the critical temperature in high temperature superconductors.

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Miguel C. N. Fiolhais, Joseph L. Birman. 2014-07-13. Phenomenological correlations in high-temperature superconductors. https://doi.org/10.1209/0295-5075%2F107%2F27001

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