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| Title:
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Perturbed bifurcations in the BCS gap equation |
| Type:
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Journal articleJournal article |
| Participant(s):
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Forfatter:
Spathis, P. N.
Technical University of Denmark, Department of Informatics and Mathematical Modeling
Technical University of Denmark
Email:
Research Center of Crete, Greece
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| Abstract:
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The anisotropic BCS gap equation is applied to a tight-binding model of layered high-temperature superconductors. The possible solutions have s-, d-, and mixed s- and d-wave symmetries using nearest-neighbor intralayer singlet pairing interaction of the same strength in the x and y directions. The transitions from d- or s- to mixed s- and d-wave solutions result from pitchfork bifurcations. In the case of slightly different pairing strength in the x and y directions, perturbed pitchfork bifurcations emerge, leading to a dramatic change in the physical properties of the superconducting state. |
| Published:
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in journal: Physical Review B Condensed Matter (ISSN: 0163-1829) (DOI: http://dx.doi.org/10.1103/PhysRevB.45.7360), vol: 45, issue: 13, pages: 7360-7367, 1992 |
| DOI:
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