Site-Selective NMR in the Quasi-1D Conductor beta-Sr0.33V2O5

T. Waki; M. Takigawa; T. Yamauchi; J. Yamaura; H. Ueda; Y. Ueda

doi:10.1016/j.jpcs.2007.08.060

Site-Selective NMR in the Quasi-1D Conductor beta-Sr0.33V2O5

Strongly Correlated Electrons 2009-11-11 v1

Authors: T. Waki , M. Takigawa , T. Yamauchi , J. Yamaura , H. Ueda , Y. Ueda

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Abstract

We report 51V NMR experiments in the metallic phase of the quasi-one-dimensional (1D) conductor beta-Sr0.33V2O5. The Knight shift and the quadrupole splitting of all six vanadium sites were determined as a function of the direction of magnetic field perpendicular to the conducting b-axis. Magnetic properties of the three 1D structural units are remarkably heterogeneous. In particular, the V2 ladder unit shows pronounced charge disproportionation among the two (V2a and V2b) sites. At one of these sites, the absolute value of the Knight shift and 1/(T1T) increase steeply with decreasing temperature, suggesting development of ferromagnetic correlation.

Keywords

NMR quasi-1D conductor beta-Sr0.33V2O5 Knight shift charge disproportionation ferromagnetic correlation

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@article{arxiv.cond-mat/0612017,
  title  = {Site-Selective NMR in the Quasi-1D Conductor beta-Sr0.33V2O5},
  author = {T. Waki and M. Takigawa and T. Yamauchi and J. Yamaura and H. Ueda and Y. Ueda},
  journal= {arXiv preprint arXiv:cond-mat/0612017},
  year   = {2009}
}

Comments

4 pages, 4 figures, submitted to J. Phys. Chem. Solids

Site-Selective NMR in the Quasi-1D Conductor beta-Sr0.33V2O5

Abstract

Keywords

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