Spectral function of a Luttinger liquid coupled to phonons and angle-resolved photoemission measurements in the cuprate superconductors
| dc.creator | Bindloss, Ian P. | |
| dc.creator | Kivelson, Steven A. | |
| dc.date | 2004-02-18 | |
| dc.date | 2005-01-25 | |
| dc.date.accessioned | 2026-07-07T02:56:32Z | |
| dc.date.available | 2026-07-07T02:56:32Z | |
| dc.description | We compute the finite-temperature single-particle spectral function of a one-dimensional Luttinger liquid coupled to an optical phonon band. The calculation is performed exactly for the case in which electron-phonon coupling is purely forward scattering. We extend the results to include backward scattering with a renormalization group treatment. The dispersion contains a change in velocity at the phonon energy, qualitatively similar to the case of electron-phonon coupling in a Fermi liquid. If the backward scattering part of the the electron-phonon interaction is not too strong compared to the forward scattering part, coupling to phonons also produces a pronounced peak in the spectral function at low energies. The calculated spectral function is remarkably similar to the angle-resolved photoemission spectra of the high-temperature superconductors, including the apparent presence of "nodal quasiparticles," the presence of a "kink" in the dispersion, and the non-Fermi-liquid frequency and temperature dependencies. Although a microscopic justification has not been established for treating the electronic dynamics of the cuprates as quasi-one-dimensional, at the very least we take the quality of the comparison as evidence of the non-Fermi-liquid character of the measured spectra. | |
| dc.description | 13 pages, 15 figures. Phys. Rev. B (in press) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0402457 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0402457 | |
| dc.identifier | Phys. Rev. B 71, 014524 (2005) | |
| dc.identifier | doi:10.1103/PhysRevB.71.014524 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/23358 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Superconductivity | |
| dc.title | Spectral function of a Luttinger liquid coupled to phonons and angle-resolved photoemission measurements in the cuprate superconductors | |
| dc.type | text |