### Abstract

The construction of a theory of the superconductivity of oxide metals based on the polar model is discussed. The matrix electron Green's function is calculated with allowance for both the electron-phonon interaction and strong Coulomb correlations. The possible raising of T_{c} due to the lattice instability associated with strong anharmonicity of the oxygen ion vibrations in perovskitelike compounds is considered. Strong electron correlations are taken into account in a one-band t-J model. Because of a local restriction that precludes doubly occupied states in a system with strong correlation, only d-wave pairing is possible.

Original language | English |
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Pages (from-to) | 1337-1344 |

Number of pages | 8 |

Journal | Theoretical and Mathematical Physics |

Volume | 93 |

Issue number | 3 |

DOIs | |

Publication status | Published - dec. 1 1992 |

### ASJC Scopus subject areas

- Statistical and Nonlinear Physics
- Mathematical Physics

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## Cite this

Aksenov, V. L., & Plakida, N. M. (1992). On the theory of high-temperature superconductivity.

*Theoretical and Mathematical Physics*,*93*(3), 1337-1344. https://doi.org/10.1007/BF01016392