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Charge Transfer Resonances and Superconductive Pairing in the New Oxide Metals
Abstract All theoretical discussions of the superconductivity in the new oxide metals1–6 have been within the BCS framework of two-particle pairing. The issue in question is what is the pairing mechanism? Do the Cooper pairs have the usual BCS s-wave symmetry? Is the pairing so strong that the Blatt-Schafroth type ideas of Bose condensation of tightly bound pairs are realized? The points of view proposed may be classified as follows: I. Pairing through electron-phonon interactions (i) conventional7 (ii) bipolaron formation and Bose condensation8 II. Pairing through magnetic correlation of the electrons (i) exchange of antiferromagnetic (AFM) spin fluctuations9,10 (ii) resonating valence bond (RVB) or spin-bipolaron formation and Bose condensation11,12 III. Pairing through exchange of electronic polarization resonances13
Charge Transfer Resonances and Superconductive Pairing in the New Oxide Metals
Abstract All theoretical discussions of the superconductivity in the new oxide metals1–6 have been within the BCS framework of two-particle pairing. The issue in question is what is the pairing mechanism? Do the Cooper pairs have the usual BCS s-wave symmetry? Is the pairing so strong that the Blatt-Schafroth type ideas of Bose condensation of tightly bound pairs are realized? The points of view proposed may be classified as follows: I. Pairing through electron-phonon interactions (i) conventional7 (ii) bipolaron formation and Bose condensation8 II. Pairing through magnetic correlation of the electrons (i) exchange of antiferromagnetic (AFM) spin fluctuations9,10 (ii) resonating valence bond (RVB) or spin-bipolaron formation and Bose condensation11,12 III. Pairing through exchange of electronic polarization resonances13
Charge Transfer Resonances and Superconductive Pairing in the New Oxide Metals
Varma, C. M. (author) / Schmitt-Rink, S. (author) / Abrahams, Elihu (author)
Novel Superconductivity ; 355-365
1987-01-01
11 pages
Article/Chapter (Book)
Electronic Resource
English
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