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

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.

arXiv comment8 pages, 5 figures; to appear in PRB

References in corpus (19)

• Thermodynamics of Spin S = 1/2 Antiferromagnetic Uniform and Alternating-Exchange Heisenberg Chains
• DMRG Studies of the Spin-Half Heisenberg System with Dimerization and Frustration
• Magnetic Excitations in the S=1/2 Alternating Chain Compound (VO)_2P_2O_7
• Magnetic excitation spectrum of dimerized antiferromagnetic chains
• Ferroelectric Transition Induced by the Incommensurate Magnetic Ordering in LiCuVO4
• Spin waves and magnetic interactions in LiCu2O2
• Plaquette Resonating-Valence-Bond Ground State of CaV${}_4$O${}_9$
• Exchange interactions and magnetic properties of the layered vanadates CaV2O5, MgV2O5, CaV3O7 and CaV4O9
• Realization of a large J_2 quasi-2D spin-half Heisenberg system: Li2VOSiO4
• Elementary Excitations in Dimerized and Frustrated Heisenberg Chains
• Excitation Spectrum and Superexchange Pathways in the Spin Dimer VODPO_4 . 1/2 D_2O
• Comment on "Competition between helimagnetism and commensurate quantum spin correlations in LiCu2O2"
• Coexistence of double alternating antiferromagnetic chains in (VO)_2P_2O_7 : NMR study
• Sr2V3O9 and Ba2V3O9: quasi one-dimensional spin-systems with an anomalous low temperature susceptibility
• Spectral properties of the dimerized and frustrated $S=1/2$ chain
• Spectrum of elementary and collective excitations in the dimerized S=1/2 Heisenberg chain with frustration
• Thermodynamic Properties of the Dimerised and Frustrated S=1/2 Chain
• Deconfinement Transition and Bound States in Frustrated Heisenberg Chains: Regimes of Forced and Spontaneous Dimerization
• Dynamical structure factors of the magnetization-plateau state in the $S=1/2$ bond-alternating spin chain with a next-nearest-neighbor interaction

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• Extension of the spin-1/2 frustrated square lattice model: the case of layered vanadium phosphates
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• Frustrated square lattice with spatial anisotropy: crystal structure and magnetic properties of PbZnVO(PO4)2
• Frustrated couplings between alternating spin-1/2 chains in AgVOAsO4
• Spin-chain magnetism and uniform Dzyaloshinsky-Moriya anisotropy in BaV${}_3$O${}_8$
• Unusual ferromagnetic superexchange in CdVO3: The role of Cd
• Structure and magnetism of Cr2BP3O12: Towards the quantum-classical crossover in a spin-3/2 alternating chain
• Bose-Einstein condensation of triplons close to the quantum critical point in the quasi-one-dimensional spin-$1/2$ antiferromagnet NaVOPO${}_4$
• Singlet ground state in the alternating spin-$1/2$ chain compound NaVOAsO${}_4$
• Two types of alternating spin-$\frac{1}{2}$ chains and their field-induced transitions in $\epsilon$-LiVOPO${}_4$
• Stripe order and magnetic anisotropy in the $S=1$ antiferromagnet BaMoP${}_2$O${}_8$
• Structural and magnetic properties of spin-$1/2$ dimer compound Cu${}_2$(IPA)${}_2$(DMF)(H${}_2$O) with a large spin gap
• Contrasted role of disorder for magnetic properties in an original mixed valency iron Phosphate
• Magnetic interactions and high-field properties of Ag(2)VOP(2)O(7): frustrated alternating chain close to the dimer limit
• A high-temperature expansion method for calculating paramagnetic exchange interactions