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arXiv · 1209.0026

Two-Dimensional Magnetic Correlations and Partial Long-Range Order in Geometrically Frustrated Sr2YRuO6

E. Granado·J. W. Lynn·R. F. Jardim·M. S. Torikachvili
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Abstract

Neutron diffraction on the double perovskite Sr2YRuO6 with a quasi-face-centered cubic (FCC) lattice of Ru moments reveals planar magnetic correlations that condense into a partial long-range ordered state with coupled alternate antiferromagnetic (AFM) YRuO4 square layers coexisting with short-range correlations below T{N1}=32 K. A second transition to a fully ordered AFM state below T{N2}=24 K is observed. These observations are ascribed to the cancellation of the magnetic coupling between consecutive AFM square layers in FCC antiferromagnets, notably the simplest three-dimensional frustrated magnet model system. Inhomogeneous superconductivity in Sr2YRu_{1-x}Cu_{x}O6, reported in earlier works, may be nucleated in magnetically disordered YRu_{1-x}Cu_{x}O4 layers with strong spin fluctuations.

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E. Granado, J. W. Lynn, R. F. Jardim, M. S. Torikachvili. 2012-08-31. Two-Dimensional Magnetic Correlations and Partial Long-Range Order in Geometrically Frustrated Sr2YRuO6. https://doi.org/10.1103/physrevlett.110.017202

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