Theory of Impurity Effects on the Spin Nematic State

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.

19 pages, 14 figures

References in corpus (3)

• The quadrupolar phases of the S=1 bilinear-biquadratic Heisenberg model on the triangular lattice
• Spin Nematic Phase in S=1 Triangular Antiferromagnets
• Unconventional spin freezing and fluctuations in the frustrated antiferromagnet NiGa2S4

Cited by in corpus (6)

• $\mathbb{C}{P}^2$ Skyrmion Crystals in an SU(3) Magnet with a Generalized Dzyaloshinskii-Moriya Interaction
• Spin Fluctuations from Hertz to Terahertz on a Triangular Lattice
• Impact of the lattice on magnetic properties and possible spin nematicity in the S=1 triangular antiferromagnet NiGa${}_2$S${}_4$
• Spin dynamics and spin freezing in the triangular lattice antiferromagnets FeGa2S4 and NiGa2S4
• Exfoliation and Optical Properties of S=1 Triangular Lattice Antiferromagnet NiGa${}_2$S${}_4$
• Impurity effects in one dimensional spin nematic liquid