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Octupolar order in the multiple spin exchange model on a triangular lattice

Tsutomu Momoi·Philippe Sindzingre·Nic Shannon
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Abstract

We show how a gapless spin liquid with hidden octupolar order arises in an applied magnetic field, in a model applicable to thin films of 3He with competing ferromagnetic and antiferromagnetic (cyclic) exchange interactions. Evidence is also presented for nematic -- i.e., quadrupolar -- correlations bordering on ferromagnetism in the absence of a magnetic field.

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Tsutomu Momoi, Philippe Sindzingre, Nic Shannon. 2007-01-25. Octupolar order in the multiple spin exchange model on a triangular lattice. https://doi.org/10.1103/physrevlett.97.257204

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