Thermodynamic Properties of D-Wave Paired Superconductors in the Low Temperature and Subcritical Regions |
| W. Kumala, R. Gonczarek and M. Mulak Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland |
| Received: May 11, 1999; revised version October 13, 1999; in final form February 11, 2000 |
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| D-wave paired isotropic Fermi system in the limiting cases T → Tc and T → 0 is considered. Values of the energy gap, the thermodynamic potential, and the specific heat as a function of temperature are given for admissible solutions and compared with values for S-wave paired system. It is shown that the linear term of low temperature specific heat vanishes likewise in case of S-wave pairing. The obtained results make prospects to define the geometry of the energy gap in virtue of the behavior of the specific heat in the limiting temperature cases for heavy-fermion superconductors. |
| DOI: 10.12693/APhysPolA.97.693 PACS numbers: 74.20.-z |