Theory of Impurity Effects on the Spin Nematic State

Details Theory of Impurity Effects on the Spin Nematic State Theory of Impurity Effects on the Spin Nematic State

2011-04-28

arxiv.org/abs/1104.5354v3

J. Phys. Soc. Jpn. 80 (2011) 094707

Physics

Condensed Matter

Strongly Correlated Electrons

19 pages, 14 figures

Scientific paper

10.1143/JPSJ.80.094707

The effect of magnetic bond disorder in otherwise antiferro nematic ordered system is investigated. We introduced triangular-shaped ferromagnetic bond disorder in the S=1 bilinear-biquadratic model on a triangular lattice. It is shown that the coupling between the impurity magnetic moment and nonmagnetic excitation in the bulk yields single-moment anisotropy and long-range anisotropic interaction between impurity magnetic moments. This interaction can induce unconventional spin-freezing phenomena observed in triangular magnet, NiGa2S4.

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