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Title: X-ray anomalous scattering investigation of BaVS{sub 3}

Abstract

The quasi-one-dimensional conductor BaVS{sub 3} undergoes a metal-insulator transition at T{sub MI}=70 K accompanied by a formation of superstructure doubling the chain periodicity and a magnetic transition at T{sub X}=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 T{sub MI} and T{sub X}. We interpret this result by the stabilization of two out-of phase CDW's for the d{sub z{sup 2}} and e(t{sub 2g}) electrons, which induces an orbital ordering while reducing the intrachain Coulomb repulsions.

Authors:
; ; ; ; ; ; ; ;  [1];  [2];  [3]
  1. Laboratoire de Physique des Solides (CNRS-UMR 8502), Universite Paris-Sud, Batiment 510, 91405 Orsay cedex (France)
  2. (France)
  3. (United States)
Publication Date:
OSTI Identifier:
20787835
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevB.73.033102; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM SULFIDES; CHARGE DENSITY; COULOMB FIELD; ELECTRONS; OXIDATION; PERIODICITY; REDUCTION; REFLECTION; STABILIZATION; VANADIUM SULFIDES; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Fagot, Sebastien, Foury-Leylekian, Pascale, Ravy, Sylvain, Pouget, Jean-Paul, Lorenzo, Emilio, Joly, Yves, Greenblatt, Martha, Lobanov, Maxim V., Popov, Guerman, Laboratoire de Cristallographie, CNRS, BP 166, 38042 Grenoble, and Department of Chemistry and Chemical Biology, Rutgers, State University of New Jersey, Piscataway, New Jersey 08854. X-ray anomalous scattering investigation of BaVS{sub 3}. United States: N. p., 2006. Web. doi:10.1103/PHYSREVB.73.0.
Fagot, Sebastien, Foury-Leylekian, Pascale, Ravy, Sylvain, Pouget, Jean-Paul, Lorenzo, Emilio, Joly, Yves, Greenblatt, Martha, Lobanov, Maxim V., Popov, Guerman, Laboratoire de Cristallographie, CNRS, BP 166, 38042 Grenoble, & Department of Chemistry and Chemical Biology, Rutgers, State University of New Jersey, Piscataway, New Jersey 08854. X-ray anomalous scattering investigation of BaVS{sub 3}. United States. doi:10.1103/PHYSREVB.73.0.
Fagot, Sebastien, Foury-Leylekian, Pascale, Ravy, Sylvain, Pouget, Jean-Paul, Lorenzo, Emilio, Joly, Yves, Greenblatt, Martha, Lobanov, Maxim V., Popov, Guerman, Laboratoire de Cristallographie, CNRS, BP 166, 38042 Grenoble, and Department of Chemistry and Chemical Biology, Rutgers, State University of New Jersey, Piscataway, New Jersey 08854. Sun . "X-ray anomalous scattering investigation of BaVS{sub 3}". United States. doi:10.1103/PHYSREVB.73.0.
@article{osti_20787835,
title = {X-ray anomalous scattering investigation of BaVS{sub 3}},
author = {Fagot, Sebastien and Foury-Leylekian, Pascale and Ravy, Sylvain and Pouget, Jean-Paul and Lorenzo, Emilio and Joly, Yves and Greenblatt, Martha and Lobanov, Maxim V. and Popov, Guerman and Laboratoire de Cristallographie, CNRS, BP 166, 38042 Grenoble and Department of Chemistry and Chemical Biology, Rutgers, State University of New Jersey, Piscataway, New Jersey 08854},
abstractNote = {The quasi-one-dimensional conductor BaVS{sub 3} undergoes a metal-insulator transition at T{sub MI}=70 K accompanied by a formation of superstructure doubling the chain periodicity and a magnetic transition at T{sub X}=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 T{sub MI} and T{sub X}. We interpret this result by the stabilization of two out-of phase CDW's for the d{sub z{sup 2}} and e(t{sub 2g}) electrons, which induces an orbital ordering while reducing the intrachain Coulomb repulsions.},
doi = {10.1103/PHYSREVB.73.0},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 3,
volume = 73,
place = {United States},
year = {Sun Jan 15 00:00:00 EST 2006},
month = {Sun Jan 15 00:00:00 EST 2006}
}
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