Optical properties and electronic structure of Ca-doped alpha'-NaV2O5

Preprint

31 May 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0005536

Abstract

The dielectric function of alpha'-Na(1-x)Ca(x)V2O5 (0 < x < 20%) was measured for the a and b axes in the photon energy range 0.8-4.5 eV at room temperature. By varying the Ca-concentration we control the relative abundancy of V4+ and V5+. We observe that the intensity of the main optical absorption peak at 1 eV is proportional to the number of V5+ ions. This rules out the interpretation as a V4+ d-d excitation, and it establishes that this is the on-rung bonding-antibonding transition.

Keywords

ABSORPTION
CA DOPED
DOPED ALPHA
ELECTRONIC STRUCTURE
NAV2O5
OPTICAL PROPERTIES
PHOTON
PROPERTIES AND ELECTRONIC

All Related Versions

Version 1, 2000-05-31, ArXiv
Published version: Physical Review B, 62 (24), 16522.

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