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Inversion symmetry in the spin-Peierls compound NaV2O5

A. Meetsma·J. L. de Boer·A. Damascelli·J. Jegoudez·A. Revcolevschi·T. T. M. Palstra
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Abstract

At room-temperature NaV2O5 was found to have the centrosymmetric space group Pmmn. This space group implies the presence of only one kind of V site in contrast with previous reports of the non-centrosymmetric counterpart P21mn. This indicates a non-integer valence state of vanadium. Furthermore, this symmetry has consequences for the interpretation of the transition at 34 K, which was ascribed to a spin-Peierls transition of one dimensional chains of V4+.

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A. Meetsma, J. L. de Boer, A. Damascelli, J. Jegoudez, A. Revcolevschi, T. T. M. Palstra. 1999-06-03. Inversion symmetry in the spin-Peierls compound NaV2O5. https://arxiv.org/abs/cond-mat/9806081

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