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Symmetry breaking due to Dzyaloshinsky-Moriya interactions in the kagome lattice

M. Elhajal·B. Canals·C. Lacroix
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Abstract

Due to the particular geometry of the kagomé lattice, it is shown that antisymmetric Dzyaloshinsky-Moriya interactions are allowed and induce magnetic ordering. The symmetry of the obtained low temperature magnetic phases are studied through mean field approximation and classical Monté Carlo simulations. A phase diagram relating the geometry of the interaction and the ordering temperature has been derived. The order of magnitude of the anisotropies due to Dzyaloshinsky-Moriya interactions are more important than in non-frustrated magnets, which enhances its appearance in real systems. Application to the jarosites compounds is proposed. In particular, the low temperature behaviors of the Fe and Cr-based jarosites are correctly described by this model.

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M. Elhajal, B. Canals, C. Lacroix. 2002-02-12. Symmetry breaking due to Dzyaloshinsky-Moriya interactions in the kagome lattice. https://doi.org/10.1103/physrevb.66.014422

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