Magnetic properties of Ag2VOP2O7: An unexpected spin dimer system

Alexander A. Tsirlin, Ramesh Nath, Christoph Geibel, and Helge Rosner
Phys. Rev. B 77, 104436 – Published 26 March 2008


Magnetic properties of the silver vanadium phosphate Ag2VOP2O7 are studied by means of magnetic susceptibility measurements and electronic structure calculations. In spite of the layered crystal structure suggesting one-dimensional or two-dimensional magnetic behavior, this compound can be understood as a spin dimer system. The fit of the magnetic susceptibility indicates an intradimer interaction of about 30K 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.

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  • Received 10 November 2007


©2008 American Physical Society

Authors & Affiliations

Alexander A. Tsirlin1,2,*, Ramesh Nath1, Christoph Geibel1, and Helge Rosner1,†

  • 1Max-Planck Institute CPfS, Nöthnitzer Strasse 40, 01187 Dresden, Germany
  • 2Department of Chemistry, Moscow State University, 119992 Moscow, Russia

  • *

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Vol. 77, Iss. 10 — 1 March 2008

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