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- Title
Nature of Cooper Instability of Spin Polarons in Cuprate High- $$T_\mathrm{c}$$ Superconductors.
- Authors
Val'kov, V.; Dzebisashvili, D.; Barabanov, A.
- Abstract
It is shown that the exchange interaction in the subsystem of localized moments of copper ions can trigger a Cooper instability in the ensemble of spin-polaron quasiparticles in cuprate high-temperature superconductors. It is important that, inherent to cuprates, strong coupling between Fermi and spin degrees of freedom leads on the one hand to formation of spin-polaron quasiparticles and, on the other hand, allows to transfer the interaction between Bose degrees of freedom onto the interaction between Fermi quasiparticles. The solution of the integral equation for the d-wave superconducting order parameter is well consistent with the available experimental data.
- Subjects
POLARONS; SUPERCONDUCTORS; COPPER ions; PARAMETER estimation; DATA analysis
- Publication
Journal of Low Temperature Physics, 2015, Vol 181, Issue 3/4, p134
- ISSN
0022-2291
- Publication type
Article
- DOI
10.1007/s10909-015-1331-9