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arXiv · 0804.4034

Nematic and chiral orders for planar spins on triangular lattice

Jin-Hong Park·Shigeki Onoda·Naoto Nagaosa·Jung Hoon Han
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Abstract

We propose a variant of the antiferromagnetic XY model on the triangular lattice to study the interplay between the chiral and nematic orders in addition to the magnetic order. The model has a significant bi-quadratic interaction of the planar spins. When the bi-quadratic exchange energy dominates, a large temperature window is shown to exist over which the nematic and the chiral orders co-exist without the magnetic order, thus defining a chiral-nematic state. The phase diagram of the model and some of its critical properties are derived by means of the Monte Carlo simulation.

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Jin-Hong Park, Shigeki Onoda, Naoto Nagaosa, Jung Hoon Han. 2008-07-04. Nematic and chiral orders for planar spins on triangular lattice. https://doi.org/10.1103/physrevlett.101.167202

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