NMR characterization of spin- alternating antiferromagnetic chains in the high-pressure phase of (V O)2P2O7

2004/02/21 by J. Kikuchi, Jun Kikuchi, K. Motoya +5
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Transition Metal Oxide Nanomaterials #cond-mat.str-el

paper · pdf · doi:10.1088/0953-8984/16/12/l02

published as J. Phys.: Condens. Matter 16 (2004) L167-L172 · 6 pages, 5 figures; To be published in J. Phys. Condens. Matter

arxiv created 2004/02/21 · openalex publication_date 2004/03/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Local-susceptibility measurements via the NMR shifts of ³¹P and ⁵¹V nuclei in the high-pressure phase of (VO)₂P₂O₇ confirmed the existence of a unique alternating antiferromagnetic chain with a zero-field spin gap of 34 K. The ³¹P nuclear spin-lattice relaxation rate scales with the uniform spin susceptibility below about 15 K which shows that the temperature dependence of both the static and dynamical spin susceptibilities becomes identical at temperatures not far below the spin-gap energy.

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