d-wave pairing of spin-polaron quasiparticles in the spin–fermion model of the electronic structure of the CuO2 plane

It is shown that the strong coupling between spin moments of copper ions and oxygen holes resulting from the hybridization processes in the Emery model determines the formation of spin-polaron quasiparticles and ensures their effective attraction. This induces Cooper instability with d-wave pairing...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2015-06, Vol.79 (6), p.781-783
Main Authors: Val’kov, V. V., Dzebisashvili, D. M., Barabanov, A. F.
Format: Article
Language:English
Subjects:
Attraction
Electron spin
Electronic structure
Hadrons
Heavy Ions
Nuclear Physics
Physics
Physics and Astronomy
Stability
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Summary:It is shown that the strong coupling between spin moments of copper ions and oxygen holes resulting from the hybridization processes in the Emery model determines the formation of spin-polaron quasiparticles and ensures their effective attraction. This induces Cooper instability with d-wave pairing of spinpolaron quasiparticles. The obtained phase diagram agrees with the available experimental data.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873815060350