X-ray anomalous scattering investigation of BaV S3

Sébastien Fagot, Pascale Foury-Leylekian, Sylvain Ravy, Jean Paul Pouget, Émilio Lorenzo, Yves Joly, Martha Greenblatt, Maxim V. Lobanov, Guerman Popov

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26 Scopus citations

Abstract

The quasi-one-dimensional conductor BaV S3 undergoes a metal-insulator transition at TMI =70 K accompanied by a formation of superstructure doubling the chain periodicity and a magnetic transition at TX =30 K. We present an anomalous x-ray scattering investigation of the charge-density wave (CDW) satellite reflections at the V K -edge. Our study shows that no charge disproportionation larger than 0.01 electron occurs at TMI and TX. We interpret this result by the stabilization of two out-of phase CDW's for the d z2 and e (t2g) electrons, which induces an orbital ordering while reducing the intrachain Coulomb repulsions.

Original languageEnglish (US)
Article number033102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number3
DOIs
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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