English

q-Deformed Anisotropic Superexchange Interaction, Frustration and GL_{pq}(2)

Condensed Matter 2009-10-31 v1 High Energy Physics - Theory

Abstract

We study a suitable q-deformed version of the Moriya's superexchange interaction theory by means of its underlying quantum group structure. We show that the one-dimensional chain case is associated with the non-standard quantum group GLpq(2)GL_{pq}(2) , evidencing the integrability structure of the system. This biparametric deformation of GL(2,C)GL(2,{\bf C}) arise as a twisting of GLq(2)GL_{q}(2) and it match exactly the local rotation appearing in the Shekhtman's work \cite{Sh}. This allow us to express the frustration condition in terms of this twisting, also showing that effect of the Moriya's vector amounts to a twisting of the boundary condition.

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Cite

@article{arxiv.cond-mat/9805017,
  title  = {q-Deformed Anisotropic Superexchange Interaction, Frustration and GL_{pq}(2)},
  author = {S. Grillo and H. Montani},
  journal= {arXiv preprint arXiv:cond-mat/9805017},
  year   = {2009}
}

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12 pages