Charge-ordering and optical transitions of LiV2O5 and NaV2O5

M.J.Konstantinovic , J.Dong , M.E.Ziaei , B.P.Clayman , J.C.Irwin , K.Yakushi , M.Isobe , Y.Ueda

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classification ❄️ cond-mat.str-el

keywords liv2o5nav2o5charge-orderingopticalpeakssimilarspectrasuppression

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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.

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Charge-ordering and optical transitions of LiV2O5 and NaV2O5

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