Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2004-04-03
Phys. Rev. B 70, 125107 (2004)
Physics
Condensed Matter
Other Condensed Matter
11 pages, 10 figures
Scientific paper
10.1103/PhysRevB.70.125107
The electronic structure of two V-based ladder compounds, the quarter-filled NaV$_2$O$_5$ in the symmetric phase and the iso-structural half-filled CaV$_2$O$_5$ is investigated by ab initio calculations. Based on the bandstructure we determine the dielectric tensor $\epsilon(\omega)$ of these systems in a wide energy range. The frequencies and eigenvectors of the fully symmetric A$_{g}$ phonon modes and the corresponding electron-phonon and spin-phonon coupling parameters are also calculated from first-principles. We determine the Raman scattering intensities of the A$_g$ phonon modes as a function of polarization and frequency of the exciting light. All results, i.e. shape and magnitude of the dielectric function, phonon frequencies and Raman intensities show very good agreement with available experimental data.
Ambrosch-Draxl Claudia
Evertz Hans Gerd
Sherman Ya. E.
Spitaler J.
No associations
LandOfFree
Optical properties, electron-phonon coupling, and Raman scattering of vanadium ladder compounds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Optical properties, electron-phonon coupling, and Raman scattering of vanadium ladder compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical properties, electron-phonon coupling, and Raman scattering of vanadium ladder compounds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-287210