10 August 1994 Velocity renormalization in high-Tc cuprates
Author Affiliations +
Abstract
We consider a low-density electron-gas (rs equals 10 - 16) imbedded in a highly dispersive medium ((epsilon) 0/(epsilon) (infinity ) > 10). We find that the Fermi velocity is greatly enhanced over the single-particle value. This enhancement occurs only very close to the Fermi surface, within an energy range smaller than (omega) 0, the characteristic frequency of the dispersion. This theory applies to high-Tc cuprates, as well as to several other systems. It accounts for the highly-anomalous transport properties in the normal state. We believe that it also accounts for the high value of Tc, based on the standard phonon- mediated interaction BCS theory. There exist some experimental indications for a greatly- enhanced Fermi velocity in YBa2Cu3O7.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Meir Weger, "Velocity renormalization in high-Tc cuprates", Proc. SPIE 2158, Oxide Superconductor Physics and Nano-Engineering, (10 August 1994); doi: 10.1117/12.182691; https://doi.org/10.1117/12.182691
PROCEEDINGS
12 PAGES


SHARE
Back to Top