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

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

2008-02-15

arxiv.org/abs/0802.2293v1

Phys. Rev. B, 77, 104436 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 5 figures; to appear in PRB

Scientific paper

10.1103/PhysRevB.77.104436

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.

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