SPIN FLUCTUATION SUPERCONDUCTING PAIRING IN COPPER OXIDES

Authors
Citation
Nm. Plakida, SPIN FLUCTUATION SUPERCONDUCTING PAIRING IN COPPER OXIDES, Philosophical magazine. B. Physics of condensed matter. Statistical mechanics, electronic, optical and magnetic, 76(5), 1997, pp. 771-795
Citations number
72
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics, Applied",Mechanics,"Physics, Condensed Matter","Material Science
ISSN journal
1364-2812
Volume
76
Issue
5
Year of publication
1997
Pages
771 - 795
Database
ISI
SICI code
1364-2812(1997)76:5<771:SFSPIC>2.0.ZU;2-U
Abstract
Theoretical studies of the spin fluctuation spectrum and superconducti ng pairing mediated by spin fluctuation exchange are reported with a s pecial emphasis on the results obtained for microscopic models with st rong electron correlations: the one-band Hubbard model and the t-J mod el. Phenomenological models for spin fluctuation pairing are also cons idered. The symmetry of the superconducting order parameter and the do ping dependence of superconducting transition temperature T-c obtained by numerical solutions of the strong-coupling Eliashberg equations fo r the microscopic models are discussed. The theoretical investigations presented strongly support the spin-exchange pairing mechanism in cop per oxides.