Renormalization of the electron-phonon coupling in the one-band Hubbard model
| dc.creator | Koch, Erik | |
| dc.creator | Zeyher, Roland | |
| dc.date | 2004-01-07 | |
| dc.date.accessioned | 2026-07-07T02:55:47Z | |
| dc.date.available | 2026-07-07T02:55:47Z | |
| dc.description | We investigate the effect of electronic correlations on the coupling of electrons to Holstein phonons in the one-band Hubbard model. We calculate the static electron-phonon vertex within linear response of Kotliar-Ruckenstein slave-bosons in the paramagnetic saddle-point approximation. Within this approach the on-site Coulomb interaction U strongly suppresses the coupling to Holstein phonons at low temperatures. Moreover the vertex function does not show particularly strong forward scattering. Going to larger temperatures kT\sim t we find that after an initial decrease with U, the electron-phonon coupling starts to increase with U, confirming a recent result of Cerruti, Cappelluti, and Pietronero. We show that this behavior is related to an unusual reentrant behavior from a phase separated to a paramagnetic state upon decreasing the temperature. | |
| dc.description | 4 pages, 6 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0401089 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0401089 | |
| dc.identifier | Phys. Rev. B 70, 094510 (2004) | |
| dc.identifier | doi:10.1103/PhysRevB.70.094510 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/23073 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Renormalization of the electron-phonon coupling in the one-band Hubbard model | |
| dc.type | text |