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 language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - 2006|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics