Critical Phenomena in Long-Range RKKY Ising Spin Glasses

Details Critical Phenomena in Long-Range RKKY Ising Spin Glasses Critical Phenomena in Long-Range RKKY Ising Spin Glasses

2011-01-19

arxiv.org/abs/1101.3618v2

Physics

Condensed Matter

Disordered Systems and Neural Networks

6 pages, 3 figures, Proceedings of ICFCM 2011

Scientific paper

10.1088/1742-6596/320/1/012051

We have investigated critical phenomena in spin glasses RxY1-xRu2Si2 (R = Dy, Tb, Gd). These compounds, where the magnetic moments of rare-earth ions interact by the long-range Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction via conduction electrons, has uniaxial magnetic anisotropy. The separation of the zero-field-cooled and field-cooled magnetization was found only along the c-axis in all compounds, and hence, they are classified into the long-range Ising spin glass. The magnetic anisotropic energies in these compounds are different from each other in two orders of magnitude, from 330 K to 1.8 K, however, the critical exponents are similar. It clearly indicates a presence of the universality of the long-range RKKY Ising spin glasses.

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