Magnetic properties of Ag(2)VOP(2)O(7): an unexpected spin dimer system

Alexander A. Tsirlin; Ramesh Nath; Christoph Geibel; Helge Rosner

doi:10.1103/PhysRevB.77.104436

Magnetic properties of Ag(2)VOP(2)O(7): an unexpected spin dimer system

Strongly Correlated Electrons 2008-03-27 v1 Materials Science

Authors: Alexander A. Tsirlin , Ramesh Nath , Christoph Geibel , Helge Rosner

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Abstract

Magnetic properties of the silver vanadium phosphate Ag(2)VOP(2)O(7) are studied by means of magnetic susceptibility measurements and electronic structure calculations. In spite of the layered crystal structure suggesting 1D or 2D magnetic behavior, this compound can be understood as a spin dimer system. The fit of the magnetic susceptibility indicates an intradimer interaction of about 30 K in perfect agreement with the computational results. Our study emphasizes the possible pitfalls in interpreting experimental data on structural basis only and points out the importance of microscopic models for the understanding of the magnetic properties of vanadium phosphates.

Keywords

magnetic susceptibility spin dimer electronic structure calculations intradimer interaction vanadium phosphates Ag(2)VOP(2)O(7)

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@article{arxiv.0802.2293,
  title  = {Magnetic properties of Ag(2)VOP(2)O(7): an unexpected spin dimer system},
  author = {Alexander A. Tsirlin and Ramesh Nath and Christoph Geibel and Helge Rosner},
  journal= {arXiv preprint arXiv:0802.2293},
  year   = {2008}
}

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8 pages, 5 figures; to appear in PRB

Magnetic properties of Ag(2)VOP(2)O(7): an unexpected spin dimer system

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