English

Structural aspects of the metal-insulator transition in BaVS3

Strongly Correlated Electrons 2009-11-10 v1
Authors: S. Fagot , P. Foury-Leylekian , S. Ravy , J. P. Pouget , M. Anne , G. Popov , M. V. Lobanov , M. Greenblatt
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Abstract

A sequence of structural transitions occurring in the quasi-one-dimensional (1D) 3d1 system BaVS3 at low temperature was investigated by high resolution synchrotron X-ray diffraction. The orthorhombic Cmc21 structure of the intermediate-temperature (70K<T<240K) phase was confirmed. A model for the low-T (T<70K) k=(1 0 1/2)O superstructure (with Im symmetry) is proposed and refined. The formation of the superstructure is associated with the stabilization of a mixed bond order / charge density wave.

Keywords

metal-insulator transition BaVS3 quasi-one-dimensional system synchrotron X-ray diffraction superstructure charge density wave bond order

Cite

@article{arxiv.cond-mat/0410110,
  title  = {Structural aspects of the metal-insulator transition in BaVS3},
  author = {S. Fagot and P. Foury-Leylekian and S. Ravy and J. P. Pouget and M. Anne and G. Popov and M. V. Lobanov and M. Greenblatt},
  journal= {arXiv preprint arXiv:cond-mat/0410110},
  year   = {2009}
}

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