Interplay between electron-phonon and Coulomb interactions in cuprates
Strongly Correlated Electrons
2008-01-17 v1 Materials Science
Abstract
Evidence for strong electron-phonon coupling in high-Tc cuprates is reviewed, with emphasis on the electron and phonon spectral functions. Effects due to the interplay between the Coulomb and electron-phonon interactions are studied. For weakly doped cuprates, the phonon self-energy is strongly reduced due to correlation effects, while there is no corresponding strong reduction for the electron self-energy. Polaron formation is studied, focusing on effects of Coulomb interaction and antiferromagnetic correlations. It is argued that experimental indications of polaron formation in undoped cuprates are due to a strong electron-phonon interaction for these systems.
Cite
@article{arxiv.0708.1407,
title = {Interplay between electron-phonon and Coulomb interactions in cuprates},
author = {O. Gunnarsson and O. Rösch},
journal= {arXiv preprint arXiv:0708.1407},
year = {2008}
}
Comments
43 pages and 22 figures