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Possible ferro-spin nematic order in NiGa2S4

Subhro Bhattacharjee·Vijay B. Shenoy·T. Senthil
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Abstract

We explore the possibility that the spin-1 triangular lattice magnet NiGa2 S4 may have a ferro-nematic ground state with no frozen magnetic moment but a uniform quadrupole moment. Such a state may be stabilized by biquadratic spin interactions. We describe the physical properties of this state and suggest experiments to help verify this proposal. We also contrast this state with a `non-collinear' nematic state proposed earlier by Tsunetsugu and Arikawa for NiGa2S4 .

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Subhro Bhattacharjee, Vijay B. Shenoy, T. Senthil. 2006-05-10. Possible ferro-spin nematic order in NiGa2S4. https://doi.org/10.1103/physrevb.74.092406

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