Antiferromagnetic singlet pairs, high-frequency phonons, and superconductivity
- 1 June 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 35 (16), 8726-8729
- https://doi.org/10.1103/physrevb.35.8726
Abstract
The properties of a model of electrons interacting through an on-site Hubbard repulsion U, and coupled to intersite lattice vibrations, are discussed. It is argued that the antiferromagnetic singlet pairs induced by U will condense into a superconducting state in the presence of coupling to high-frequency phonons, or, equivalently, that an on-site U strongly enhances the electron-phonon coupling giving rise to superconductivity. It is proposed that this model describes the essential features of the high- oxide superconductors.
Keywords
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