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Charge Order in NaV2O5 studied by EPR

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.

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M. Lohmann, H. -A. Krug von Nidda, M. V. Eremin, A. Loidl, G. Obermeier, S. Horn. 2000-04-06. Charge Order in NaV2O5 studied by EPR. https://doi.org/10.1103/physrevlett.85.1742

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