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Dielectric anomaly in NaV2O5: evidence for charge ordering

By A.I. Smirnov, M.N. Popova, A.B. Sushkov, S.A. Golubchik, D.I. Khomskii, M.V. Mostovoy, A.N. Vasil'ev, M. Isobe and Y. Ueda


We found a high-frequency dielectric and magnetic anomaly in NaV2O5 at the phase transition into the spin-gap state. The dielectric constant anomaly is of the antiferroelectric type, which is in agreement with the models assuming the zigzag charge ordering in the ab-plane.

Year: 2000
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