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Abstract: The recently proposed theoretical model of superconductors endowed with twodistinct superconducting phases and critical temperatures is further analyzedby introducing two distinct order parameters, described by two scalar fieldswhich condensate at different temperatures. We find some deviations in basicthermodynamical quantities with respect to the Ginzburg-Landau one-phasesuperconductors. In particular, by contrast to the usual case where only onejump in specific heat takes place at the normal-superconductor transitiontemperature, we actually predict an additional discontinuity for C V whenpassing from a superconducting phase to the other one.



Author: E. Di Grezia, S. Esposito, G. Salesi

Source: https://arxiv.org/







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