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

doi:10.1103/PhysRevB.73.033102

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

School of Arts and Sciences, Chemistry & Chemical Biology

Research output: Contribution to journal › Article › peer-review

27 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 language	English (US)
Article number	033102
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	73
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.73.033102
State	Published - 2006

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.73.033102

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title = "X-ray anomalous scattering investigation of BaV S3",

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.",

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doi = "10.1103/PhysRevB.73.033102",

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T1 - X-ray anomalous scattering investigation of BaV S3

AU - Fagot, Sébastien

AU - Foury-Leylekian, Pascale

AU - Ravy, Sylvain

AU - Pouget, Jean Paul

AU - Lorenzo, Émilio

AU - Joly, Yves

AU - Greenblatt, Martha

AU - Lobanov, Maxim V.

AU - Popov, Guerman

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

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JF - Physical Review B - Condensed Matter and Materials Physics

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X-ray anomalous scattering investigation of BaV S3

Abstract

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