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.
Similar content being viewed by others
References
V.J. Emery, Phys. Rev. Lett. 58, 2794 (1987)
C.M. Varma, S. Schmitt-Rink, E. Abrahams, Solid State Commun. 62, 681 (1987)
J.E. Hirsch, Phys. Rev. Lett. 59, 228 (1987)
J. Zaanen, A.M. Oles, Phys. Rev. B 37, 9423 (1988)
A.F. Barabanov, A.A. Kovalev, O.V. Urazaev, A.M. Belemuk, JETP 92, 677 (2001)
A.F. Barabanov, V.M. Beresovsky, E. Zhasinas, L.A. Maksimov, JETP 83, 819 (1996)
A.F. Barabanov, R.O. Kuzian, L.A. Maksimov, Phys. Rev. B 55, 4015 (1997)
R. Zwanzig, Phys. Rev. 124, 983 (1961)
H. Mori, Prog. Theor. Phys. 33, 423 (1965)
F.C. Zhang, T.M. Rice, Phys. Rev. B 37, 3759 (1988)
Acknowledgments
This study was supported by the Russian Foundation for Basic Research, Projects Nos. 13-02-00523, 13-02-00909 and the Dynasty Foundation.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Val’kov, V.V., Dzebisashvili, D.M. & Barabanov, A.F. Nature of Cooper Instability of Spin Polarons in Cuprate High-\(T_\mathrm{c}\) Superconductors. J Low Temp Phys 181, 134–138 (2015). https://doi.org/10.1007/s10909-015-1331-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10909-015-1331-9