Inversion Symmetry in the Spin-Peierls Compound α'-NaV2O5
Inversion Symmetry in the Spin-Peierls Compound α'-NaV2O5
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自旋-Peierls 化合物 α-NaV2O5 的反演对称性
DOI：
10.1107/s0108270198004855
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
U. Paris
中科院分区：
文献类型：
--
作者：
A. Meetsma;J. Boer;A. Damascelli;J. Jegoudez;A. Revcolevschi;T. Groningen;U. Paris
在室温下，五氧代二钒酸钠，NaV2O5，被发现具有中心对称的空间群Pmmm。这个空间群意味着只有一种V网站的存在下，与以前的报告相比，非中心对称的P21mn对应。这表明钒的非整数价态。此外，这种对称性的后果在34 K的过渡，这是归因于一个自旋Peierls过渡的一维链的V4+离子的解释。
At room temperature, sodium pentaoxodivanadate, NaV2O5, was found to have the centrosymmetric space group Pmmm. This space group implies the presence of only one kind of V site, in contrast with previous reports of the non-centrosymmetric P21mn counterpart. 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+ ions.