Thermodynamic Properties of D-Wave Paired Superconductors |
| R. Gonczarek, M. Mulak and W. Kumala Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland |
| Received: May 29, 1998; revised version July 14, 1998;, in final form December 31, 1998 |
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| The D-wave paired Fermi system is considered in the frame of generalized gap equation obtained in a BCS-like approach. It is shown that the thermodynamic functions of a system, as the thermodynamic potential, entropy and heat capacity differences between the normal and superconducting state are precisely defined functionals of the energy gap as a function of temperature. The derived formulas are identical as those obtained for S-wave paired Fermi system. It states that the developed formalism can be applied, in practice, to investigation of real superconductors in which a singlet state is realized. Some numerical results illustrating prospects and capabilities of the presented formalism are given for chosen structures of the order parameter. |
| DOI: 10.12693/APhysPolA.95.231 PACS numbers: 74.20.-z |