Skip to main content
Log in

Resonant Raman scattering in the superconducting cuprates: Frozen-phonon versus perturbational approach

The European Physical Journal B - Condensed Matter and Complex Systems Aims and scope Submit manuscript

Abstract:

We consider in detail Raman scattering by vibration of the apical oxygen ions in the RBa2Cu3O7 superconducting cuprates. The scattering intensity is very sensitive to the ratio of diagonal and off-diagonal matrix elements of electron-phonon coupling, bandstructure, and carrier concentration. Our results show a large quantitative difference between the results of frozen-phonon and perturbational approach to the Raman process. The discrepancy becomes especially large when interband transitions to the states near the Fermi level are close to resonance with the incident light. The calculation of phonon-induced ion charge fluctuations shows an analogous discrepancy. The reason for these effects is the possibility of carrier redistribution between different parts of the Fermi surface arising in the frozen-phonon approximation. Our results show that Raman scattering in superconducting superlattices is very sensitive to the properties of the states near the Fermi level. For this reason experiments performed on the superlattices can help to resolve the discrepancy.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Author information

Authors and Affiliations

Authors

Additional information

Received 8 December 1999

Rights and permissions

Reprints and permissions

About this article

Cite this article

Sherman, E., Ambrosch-Draxl, C. Resonant Raman scattering in the superconducting cuprates: Frozen-phonon versus perturbational approach. Eur. Phys. J. B 16, 251–259 (2000). https://doi.org/10.1007/s100510070227

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s100510070227

Navigation