Abstract
We studied the doping dependence of the electronic structure and the Raman-active phonon modes in the high-temperature superconductor Thereby, doping concentrations from the undoped case up to the overdoped case were considered. All obtained phonon frequencies compare well to published data for For optimal doping of the Raman spectra show a huge increase in intensity for certain scattering geometries indicating enhanced electron-phonon coupling. The effects of doping on the density of states, Fermi surface, and electric-field gradients were also investigated.
- Received 6 February 2002
DOI:https://doi.org/10.1103/PhysRevB.67.134508
©2003 American Physical Society