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Abstracts
The influence of randomness of local pair site energies on superconducting properties of a system of coexisting local pairs and itinerant electrons described by the (hard-core) boson-fermion model is analyzed within variational BCS Hartree-Fock approach. Assuming the rectangular distribution function of the random potential the phase diagrams, critical temperatures, and the chemical potential behaviours are determined.
Discipline
Journal
Year
Volume
Issue
Pages
745-749
Physical description
Dates
published
2004-11
received
2004-06-06
Contributors
author
- Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
author
- Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
author
- Institute of Physics, A. Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
References
- 1. S. Robaszkiewicz, R. Micnas, J. Ranninger, Phys. Rev. B, 36, 180, 1987; J. Ranninger, S. Robaszkiewicz,Physica B, 135, 468, 1985
- 2. R. Micnas, J. Ranninger, S. Robaszkiewicz, Rev. Mod. Phys., 62, 113, 1990 and references therein
- 3. R. Micnas, S. Robaszkiewicz, in: High-T_c Superconductivity 1996: Ten Years after the Discovery, Eds. E. Kaldis, E. Liarokapis, K.A. Muller, NATO ASI Series E, Vol. 342, Kluwer Academic Publishers, The Netherlands 1997, p. 31 and references therein
- 4. R. Micnas, S. Robaszkiewicz, A. Bussmann-Holder, Phys. Rev. B, 66, 104516, 2002
- 5. See e.g. Y. Ohashi, A. Griffin, Phys. Rev. Lett., 89, 130402, 2002
- 6. G. Pawl owski, S. Robaszkiewicz, Mol. Phys. Rep., 34/1, 76, 2001; Phys. Status Solidi B, 236, 400, 2003
- 7. T. Domański, K.I. Wysokiński, Phys. Rev. B, 66, 064517, 2002
- 8. G. Pawlowski, S. Robaszkiewicz, R. Micnas, J. Supercond., 17, 33, 2004
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv106n527kz