Infrared reflectivity spectra of η-Na1.3V2O5 in the charge disordered and ordered phase

Popovic, Z V; Djokic, D M; Dohcevic-Mitrovic, Z; Isobe, M; Ueda, Y

doi:10.1140/epjb/e2008-00329-0

Infrared reflectivity spectra of η-Na1.3V2O5 in the charge disordered and ordered phase

Popovic, Z V ; Djokic, D M ; Dohcevic-Mitrovic, Z ; Isobe, M[...]

We have measured the far-infrared reflectivity spectra of the sodium vanadium oxide η-Na1.3V2O5 polycrystals in the wide temperature (80–300 K) and frequency (150–1500 cm−1) range. Appearance of new phonon oscillators, phonon oscillator mode splitting and step-like shift of TO and LO frequencies at low temperatures are correlated with the charge-ordering phase transition, which takes place at about 120 K in this vanadium oxide.

Published in:

The European Physical Journal B, 65, 1-4

Year:

2008

Keywords:

PACS 78.30.Hv Other nonmetallic inorganics - 63.20.D-Phonon states and bands ; normal modes ; and phonon dispersion - 71.30.+h Metal-insulator transitions and other electronic transitions - 71.27.+a Strongly correlated electron systems; heavy fermions

DOI:

10.1140/epjb/e2008-00329-0

Laboratories:

LNNME

Record appears in:

Scientific production and competences > Archives > SB - School of Basic Sciences > LNNME - Laboratory of Nanostructures and Novel Electronic Materials
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