The recently proposed theoretical model of superconductors endowed with two distinct superconducting phases and critical temperatures is further analyzed by introducing two distinct order parameters, described by two scalar fields which condensate at different temperatures. We find some deviations in basic thermodynamical quantities with respect to the Ginzburg-Landau one-phase superconductors. In particular, in contrast to the usual case where only one jump in specific heat takes place at the normal-superconductor transition temperature, we actually predict an additional discontinuity for C-V when passing from a superconducting phase to the other one. (c) 2007 Elsevier B.V. All rights reserved.
Second discontinuity in the specific heat of two-phase superconductors / Di Grezia, E; Esposito, S; Salesi, G. - In: PHYSICA. C, SUPERCONDUCTIVITY. - ISSN 0921-4534. - 467:1-2(2007), pp. 4-8. [10.1016/j.physc.2007.08.001]
Second discontinuity in the specific heat of two-phase superconductors
Esposito S;
2007
Abstract
The recently proposed theoretical model of superconductors endowed with two distinct superconducting phases and critical temperatures is further analyzed by introducing two distinct order parameters, described by two scalar fields which condensate at different temperatures. We find some deviations in basic thermodynamical quantities with respect to the Ginzburg-Landau one-phase superconductors. In particular, in contrast to the usual case where only one jump in specific heat takes place at the normal-superconductor transition temperature, we actually predict an additional discontinuity for C-V when passing from a superconducting phase to the other one. (c) 2007 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
