Charge ordering signatures in the optical properties of beta-Na0.33V2O5

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dc.creatorPresura, C.
dc.creatorPopinciuc, M.
dc.creatorvan Loosdrecht, P. H. M.
dc.creatorvan der Marel, D.
dc.creatorMostovoy, M.
dc.creatorYamauchi, T.
dc.creatorUeda, Y.
dc.date2002-11-28
dc.date.accessioned2026-07-07T02:48:25Z
dc.date.available2026-07-07T02:48:25Z
dc.descriptionTemperature dependent optical spectra are reported for beta-Na0.33V2O5. The sodium ordering transition at T_Na = 240 K, and in particular the charge ordering transition at T_MI = 136 K strongly influence the optical spectra. The metal-insulator transition at \tmi leads to the opening of a psuedogap (\hbarω= 1700 cm-1), and to the appearance of a large number of optical phonons. These observations, and the presence of a mid-infrared band (typical for low dimensional metals) strongly suggests that the charge carriers in beta-Na0.33V2O5 are small polarons.
dc.descriptionTo be published in PRL
dc.identifierhttps://arxiv.org/abs/cond-mat/0211653
dc.identifierhttp://arxiv.org/abs/cond-mat/0211653
dc.identifierPhysical Review Letters 90, 026402 (2003)
dc.identifierdoi:10.1103/PhysRevLett.90.026402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/20400
dc.subjectStrongly Correlated Electrons
dc.titleCharge ordering signatures in the optical properties of beta-Na0.33V2O5
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