Liquid antiferromagnets in two dimensions

Details Liquid antiferromagnets in two dimensions Liquid antiferromagnets in two dimensions

2002-02-22

arxiv.org/abs/cond-mat/0202396v1

Phys. Rev. E 66, 011703 (2002)

Physics

Condensed Matter

Soft Condensed Matter

4 pages RevTeX, 4 figures included

Scientific paper

10.1103/PhysRevE.66.011703

It is shown that, for proper symmetry of the parent lattice, antiferromagnetic order can survive in two-dimensional liquid crystals and even isotropic liquids of point-like particles, in contradiction to what common sense might suggest. We discuss the requirements for antiferromagnetic order in the absence of translational and/or orientational lattice order. One example is the honeycomb lattice, which upon melting can form a liquid crystal with quasi-long-range orientational and antiferromagnetic order but short-range translational order. The critical properties of such systems are discussed. Finally, we draw conjectures for the three-dimensional case.

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