Charge Order in NaV2O5 studied by EPR

M. Lohmann; H. -A. Krug von Nidda; M. V. Eremin; A. Loidl; G. Obermeier; S. Horn

doi:10.1103/PhysRevLett.85.1742

Charge Order in NaV2O5 studied by EPR

Strongly Correlated Electrons 2009-10-31 v2

Authors: M. Lohmann , H. -A. Krug von Nidda , M. V. Eremin , A. Loidl , G. Obermeier , S. Horn

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Abstract

We present angular dependent EPR measurements in NaV2O5 at X-band frequencies in the temperature range 4.2 K < T < 670 K. A detailed analysis in terms of the antisymmetric Dzyaloshinski-Moriya and the anisotropic exchange interactions yields the following scheme of charge order: On decreasing temperature a quarter-filled ladder with strong charge disproportions, existing for T > 100 K, is followed by zig-zag charge-order fluctuations which become long-range and static below T_SP=34 K.

Keywords

charge ordering

Cite

@article{arxiv.cond-mat/0003488,
  title  = {Charge Order in NaV2O5 studied by EPR},
  author = {M. Lohmann and H. -A. Krug von Nidda and M. V. Eremin and A. Loidl and G. Obermeier and S. Horn},
  journal= {arXiv preprint arXiv:cond-mat/0003488},
  year   = {2009}
}

Comments

4 pages including 3 figures, submitted to Phys. Rev. Lett

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