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Na2V3O7, a frustrated nanotubular system with spin-1/2 diamond rings

T. Saha-Dasgupta·Roser Valenti·F. Capraro·C. Gros
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Abstract

Following the recent discussion on the puzzling nature of the interactions in the nanotubular system Na2V3O7, we present a detailed ab-initio microscopic analysis of its electronic and magnetic properties. By means of a non-trivial downfolding study we propose an effective model in terms of tubes of nine-site rings with the geometry of a spin-diamond necklace with frustrated inter-ring interactions. We show that this model provides a quantitative account of the observed magnetic behavior.

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T. Saha-Dasgupta, Roser Valenti, F. Capraro, C. Gros. 2005-08-17. Na2V3O7, a frustrated nanotubular system with spin-1/2 diamond rings. https://doi.org/10.1103/physrevlett.95.107201

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