X-ray anomalous scattering investigation of BaVS₃

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Sébastien Fagot, Pascale Foury-Leylekian, Sylvain Ravy, and Jean-Paul Pouget
Laboratoire de Physique des Solides (CNRS-UMR 8502), Université Paris-Sud, Bâtiment 510, 91405 Orsay cedex, France

Émilio Lorenzo and Yves Joly
Laboratoire de Cristallographie, CNRS, BP 166, 38042 Grenoble, France

Martha Greenblatt, Maxim V. Lobanov, and Guerman Popov
Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, USA

Received 19 September 2005; revised 18 November 2005; published 17 January 2006

Thequasi-one-dimensional conductor BaVS₃ undergoes a metal-insulator transition at T_MI=70 K accompaniedby a formation of superstructure doubling the chain periodicity anda magnetic transition at T_X=30 K. We present an anomalous x-rayscattering investigation of the charge-density wave (CDW) satellite reflections atthe V K-edge. Our study shows that no charge disproportionationlarger than 0.01 electron occurs at T_MI and T_X. Weinterpret this result by the stabilization of two out-of phaseCDW's for the d_z² and e(t_2g) electrons, which induces anorbital ordering while reducing the intrachain Coulomb repulsions.

URL:	http://link.aps.org/doi/10.1103/PhysRevB.73.033102
DOI:	10.1103/PhysRevB.73.033102
PACS:	71.30.+h; 61.10.-i; 71.45.Lr 71.30.+h Metal–insulator transitions and other electronic transitions 61.10.-i X-ray diffraction and scattering 71.45.Lr Charge-density-wave systems YEAR: 2006
KEYWORDS:	barium compounds, vanadium compounds, X-ray scattering, one-dimensional conductivity, metal-insulator transition, magnetic transitions, charge density waves

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M. Imada, A. Fujimori, and Y. Tokura, Rev. Mod. Phys. 70, 1039 (1998).
S. Fagot, P. Foury-Leylekian, S. Ravy, J. P. Pouget, and H. Berger, Phys. Rev. Lett. 90, 196401 (2003).
F. Lechermann, S. Biermann, and A. Georges, Phys. Rev. Lett. 94, 166402 (2005).
T. Inami, K. Ohwada, H. Kimura, M. Watanabe, Y. Noda, H. Nakamura, T. Yamasaki, M. Shiga, N. Ikeda, and Y. Murakami, Phys. Rev. B 66, 073108 (2002).
Y. Joly, S. Grenier, and J. E. Lorenzo, Phys. Rev. B 68, 104412 (2003).
Y. Joly, Phys. Rev. B 63, 125120 (2001).