Inversion symmetry in the spin-Peierls compound NaV2O5

Details Inversion symmetry in the spin-Peierls compound NaV2O5 Inversion symmetry in the spin-Peierls compound NaV2O5

1998-06-05

arxiv.org/abs/cond-mat/9806081v2

Acta Crystallographica C 54, 1558 (1998)

Physics

Condensed Matter

Strongly Correlated Electrons

Revtex, 3 pages, 2 postscript pictures embedded in the text. Corrected a mistake in one picture

Scientific paper

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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