Doping dependence of density response and bond-stretching phonons in cuprates

Abstract

We explain the anomalous doping dependence of zone boundary $(\pi ,0)$ and $(\pi ,\pi )$ bond-stretching phonons in the high-temperature superconductor La${}_{2-\delta }$Sr${}_{\delta }$CuO${}_4$ in the doping range $0<\delta <0.35$. Our calculations are based on a theory for the density response of doped Mott-Hubbard insulators.

2 pages, 3 figures, SCES conference, Karlsruhe 2004

References in corpus (1)

• Theory of the density fluctuation spectrum of strongly correlated electrons

Cited by in corpus (12)

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• Phonon anomalies and dynamic stripes
• Giant electron-phonon anomaly in doped La2CuO4 and other cuprates
• Electron-phonon coupling and spin-charge separation in one-dimensional Mott insulators
• Density matrix renormalization group study of optical conductivity in the one-dimensional Mott insulator Sr_2CuO_3
• Charge susceptibility in the t-J model
• The influence of phonon symmetry and electronic structure on the electron-phonon coupling momentum dependence in cuprates
• Dressing due to correlations strongly reduces the effect of electron-phonon coupling
• Anomalous bond stretching phonons as a probe of charge fluctuations in perovskites