Two-Dimensional Magnetic Correlations and Partial Long-Range Order in Geometrically Frustrated Sr 2 YRuO 6
Abstract: Neutron diffraction on the double perovskite Sr2YRuO6 with a quasi-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 the short-range correlations below TN1 ¼ 32 K. A second transition to a fully ordered AFM state below TN2 ¼ 24 K is observed. The reduced dimensionality of the spin correlations is arguably due to a cancellation of the magnetic coupling between consecutive AFM square layers in fcc antiferromagnets, which is the simplest three-dimensional frustrated magnet model system.
Author(s): Granado, E.; Lynn, J. W.; Jardim, R. F.; et al.
Physical Review Letters
Volume: 110 Issue: 1 Published: 2013
DOI: 10.1103/PhysRevLett.110.017202