A Spin Model for Investigating Chirality

Details A Spin Model for Investigating Chirality A Spin Model for Investigating Chirality

1995-05-26

arxiv.org/abs/cond-mat/9505143v1

Physics

Condensed Matter

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Scientific paper

10.1088/0953-8984/7/47/019

Spin chirality has generated great interest recently both from possible applications to flux phases and intrinsically, as an example of a several-site magnetic order parameter that can be long-ranged even where simpler order parameters are not. Previous work (motivated by the flux phases) has focused on antiferromagnetic chiral order; we construct a model in which the chirality orders ferromagnetically and investigate the model's behavior as a function of spin. Enlisting the aid of exact diagonalization, spin-waves, perturbation theory, and mean fields, we conclude that the model likely has long-ranged chiral order for spins 1 and greater and no non-trivial chiral order for spin 1/2.

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