Charge ordering signatures in the optical properties of beta-Na0.33V2O5
Presura, C. · Popinciuc, M. · van Loosdrecht, P. H. M. · van der Marel, D. · Mostovoy, M. · Yamauchi, T. · Ueda, Y.
Original · EN
Temperature dependent optical spectra are reported for beta-Na0.33V2O5. The sodium ordering transition at Tₙa = 240 K, and in particular the charge ordering transition at TₘI = 136 K strongly influence the optical spectra. The metal-insulator transition at leads to the opening of a psuedogap (ℏω= 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.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.