Apparent electron-phonon interaction in strongly correlated systems

Abstract

We study the interaction of electrons with phonons in strongly correlated solids, having high-T_c cuprates in mind. Using sum-rules, we show that the apparent strength of this interaction strongly depends on the property studied. If the solid has a small fraction (doping) delta of charge carriers, the influence of the interaction on the phonon self-energy is reduced by a factor delta, while there is no corresponding reduction of the coupling seen in the electron self-energy. This supports the interpretation of recent photoemission experiments, assuming a strong coupling to phonons.

4 pages, RevTeX, 2 eps figures

References in corpus (6)

• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Coupling Of The B1g Phonon To The Anti-Nodal Electronic States of Bi2Sr2Ca0.92Y0.08Cu2O(8+delta)
• Electron-phonon interaction in the t-J model
• Interplay of Electron-Phonon Interaction and Electron Correlation in High Temperature Superconductivity
• Theory of the density fluctuation spectrum of strongly correlated electrons
• Phonon spectral function for an interacting electron-phonon system

Cited by in corpus (25)

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• Relevance of phonon dynamics in strongly correlated systems coupled to phonons: A Dynamical Mean Field Theory analysis
• Electron-phonon interaction in the three-band model
• Electron-phonon interaction in Strongly Correlated Systems
• Aspects of Electron-Phonon Self-Energy Revealed from Angle-Resolved Photoemission Spectroscopy
• Spectral properties and isotope effect in strongly interacting systems: Mott-Hubbard insulator and polaronic semiconductor
• Current spinon-holon description of the one-dimensional charge-transfer insulator SrCuO2: Angle-resolved photoemission measurements
• Isotope effects in the Hubbard-Holstein model within dynamical mean-field theory
• Spin polaron theory for the photoemission spectra of layered cobaltates
• Effective electron-phonon coupling and polaronic transition in the presence of strong correlation
• Phonon anomalies and lattice dynamics in superconducting oxychlorides Ca${}_{2-x}$CuO${}_2$Cl
• Low-energy kink in the nodal dispersion of copper-oxide superconductors: Insights from Dynamical Mean Field Theory
• Sum rules and vertex corrections for electron-phonon interactions
• Extended Gutzwiller wavefunction for the Hubbard-Holstein model
• Electron-phonon coupling in undoped cuprate $YB{a}_{2}C{u}_3{O}_6$ estimated from Raman and optical conductivity spectra
• Charge susceptibility in the t-J model
• Interplay between charge-lattice interaction and strong electron correlations in cuprates: phonon anomaly and spectral kinks
• Effective enhancement of the electron-phonon coupling driven by nonperturbative electronic density fluctuations
• Phonon anomalies with doping in superconducting oxychlorides Ca2-xCuO2Cl2
• Isotopic shift in angle-resolved photoemission spectra of Bi2Sr2CaCu2O8 due to quadratic electron-phonon coupling
• Electromagnetic response of cuprate superconductors with coexisting electronic nematicity
• Electron-phonon coupling in correlated materials: insights from the Hubbard-Holstein model
• Anomalous bond stretching phonons as a probe of charge fluctuations in perovskites