Optical properties and Raman scattering of vanadium ladder compounds

Abstract

We investigate electronic and optical properties of the V-based ladder compounds NaV2O5, the iso-structural CaV2O5, as well as MgV2O5, which differs from NaV2O5 and CaV2O5 in the c axis stacking. We calculate ab initio the A_g phonon modes in these compounds as a basis for the investigation of the electron-phonon and spin-phonon coupling. The phonon modes together with the dielectric tensors as a function of the corresponding ion displacements are the starting point for the calculation of the A_g Raman scattering.

arXiv comment4 pages, 5 figures, .bbl file with references included. Accepted for publication in Physica Scripta

References in corpus (2)

• Electron-phonon and spin-phonon coupling in NaV${}_2$O${}_5$: charge fluctuations effect
• Charge kinks as Raman scatterers in quarter-filled ladders

Cited by in corpus (5)

• Magnetic properties of the antiferromagnetic spin-1/2 chain system $\beta$-TeVO${}_4$
• Single-particle spectral function of quarter-filled ladder systems
• Creation and destruction of a spin gap in weakly coupled quarter-filled ladders
• Charge order induced by electron-lattice interaction in NaV2O5
• Finite-temperature investigation of quarter filled ladder systems