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

被引：57
|
作者：
Granado, E. [1 ]
Lynn, J. W. [2 ]
Jardim, R. F. [3 ]
Torikachvili, M. S. [4 ]
机构：
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Sao Paulo, Brazil
[2] NIST, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA
[3] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil
[4] San Diego State Univ, Dept Phys, San Diego, CA 92182 USA
来源：
PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 01期
基金：
美国国家科学基金会; 巴西圣保罗研究基金会;
关键词：
SUPERCONDUCTING PROPERTIES; DOUBLE PEROVSKITE;
D O I：
10.1103/PhysRevLett.110.017202
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 T-N1 = 32 K. A second transition to a fully ordered AFM state below T-N2 = 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. DOI: 10.1103/PhysRevLett.110.017202
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页数：5
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