We propose a simple model for superconductors endowed with two critical temperatures, corresponding to two second-order phase transitions, in the framework of the Ginzburg-Landau mean-field theory. For very large Cooper pair self-interaction, in addition to the standard condensation occurring in the Ginzburg-Landau theory, we find another phase transition at a lower temperature with a maximum difference of 15% between the two critical temperatures. (c) 2006 Elsevier B.V. All rights reserved.
Superconductors with two critical temperatures / Di Grezia, E; Esposito, S; Saiesi, G. - In: PHYSICA. C, SUPERCONDUCTIVITY. - ISSN 0921-4534. - 451:2(2007), pp. 86-89. [10.1016/j.physc.2006.10.013]
Superconductors with two critical temperatures
Esposito S;
2007
Abstract
We propose a simple model for superconductors endowed with two critical temperatures, corresponding to two second-order phase transitions, in the framework of the Ginzburg-Landau mean-field theory. For very large Cooper pair self-interaction, in addition to the standard condensation occurring in the Ginzburg-Landau theory, we find another phase transition at a lower temperature with a maximum difference of 15% between the two critical temperatures. (c) 2006 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
