Apparent Electron-Phonon Interaction in Strongly Correlated Systems

O. Rösch and O. Gunnarsson
Phys. Rev. Lett. 93, 237001 – Published 29 November 2004

Abstract

We study the interaction of electrons with phonons in strongly correlated solids, having high-Tc 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) δ of charge carriers, the influence of the interaction on the phonon self-energy is reduced by a factor δ, 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.

  • Figure
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  • Received 2 July 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.237001

©2004 American Physical Society

Authors & Affiliations

O. Rösch and O. Gunnarsson

  • Max-Planck-Institut für Festkörperforschung, D-70506 Stuttgart, Germany

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Issue

Vol. 93, Iss. 23 — 3 December 2004

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