We present the measurements of the polarized optical spectra of NaV2O5 and LiV2O5. In an energy range from 0.5 to 5.5 eV we observe similar peaks in the E parallel a spectra of LiV2O5 and NaV2O5, which suggests similar electronic structure along the a axis in both materials. On the other hand, we find an almost complete suppression of the peaks in sigma_b of LiV2O5 around 1 and 5 eV. We attribute this suppression to the charge localization originating from the existence of double-chain charge-ordering patterin in LiV2O5.
@article{arxiv.cond-mat/0010327,
title = {Charge-ordering and optical transitions of LiV2O5 and NaV2O5},
author = {M. J. Konstantinovic and J. Dong and M. E. Ziaei and B. P. Clayman and J. C. Irwin and K. Yakushi and M. Isobe and Y. Ueda},
journal= {arXiv preprint arXiv:cond-mat/0010327},
year = {2009}
}
Comments
7 pages, 3 figures final version, to appear in PRB