Answers are grounded in this paper and cite their sources.
A simple correlated valence fluctuation model is proposed as a possible mechanism for high-T c superconductivity in certain copper oxides. Electron pairs are formed by Coulomb attraction between electrons in mainly Cu 2+ (d 9 configuration) pyramidal planes mediated by Cu 3+ (d 8 configuration) ions in the CuO 4 chain-like plane in YBa 2 Cu 3 O 7-x . These electron pairs have high binding energies necessary for high T c , and the model is capable of explaining a number of other observed properties.
No takes yet. Share an insight, caveat, or question.
Wenyao Liang (1987) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: