Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-07-11
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 2 figures. A paper for the proceedings of the HFM 2008 conference
Scientific paper
10.1088/1742-6596/145/1/012067
We report on high-field magnetic properties of the silver vanadium phosphate Ag(2)VOP(2)O(7). This compound has a layered crystal structure, but the specific topology of the V-P-O framework gives rise to a one-dimensional spin system, a frustrated alternating chain. Low-field magnetization measurements and band structure calculations show that Ag(2)VOP(2)O(7) is close to the dimer limit with the largest nearest-neighbor interaction of about 30 K. High-field magnetization data reveal the critical fields \mu_0H_{c1} of about 23 T (closing of the spin gap) and \mu_0H_{c2} of about 30 T (saturation by full alignment of the magnetic moments). From H_{c1} to H_{c2} the magnetization increases sharply similar to the system of isolated dimers. Thus, the magnetic frustration in Ag(2)VOP(2)O(7) bears little influence on the high-field properties of this compound.
Geibel Christoph
Nath Ramesh
Rosner Helge
Skourski Yurii
Tsirlin Alexander A.
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