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arXiv · 1104.5354

Theory of Impurity Effects on the Spin Nematic State

Junji Takano·Hirokazu Tsunetsugu
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Abstract

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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Junji Takano, Hirokazu Tsunetsugu. 2011-06-29. Theory of Impurity Effects on the Spin Nematic State. https://doi.org/10.1143/jpsj.80.094707

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