High-temperature superconductivity and normal state in the Holstein-t-J model
Strongly Correlated Electrons
2015-06-16 v1
Abstract
A possible origin of the high-temprature superconductivity in cuprates has been suggested. It is supposed that electron-phonon interaction determines the strong correlation narrowing of the electron band. It provides the conditions for the formation of a singlet electron pair coupled by exchange interaction. For the pure t-J model it has been proved that these electron pairs are destroyed by a strong effective kinematic field. The detailed analysis of an influence of the Holstein polaron excitations upon normal and superconducting properties of the strongly correlated electrons was made. A calculated critical temperature of the superconductivity and gap function are in good agreement with experimental data for cuprates.
Cite
@article{arxiv.1307.7850,
title = {High-temperature superconductivity and normal state in the Holstein-t-J model},
author = {E. E. Zubov},
journal= {arXiv preprint arXiv:1307.7850},
year = {2015}
}