Symmetry considerations on the magnetization process of the Heisenberg model on the pyrochlore lattice

Details Symmetry considerations on the magnetization process of the Heisenberg model on the pyrochlore lattice Symmetry considerations on the magnetization process of the Heisenberg model on the pyrochlore lattice

2006-09-21

arxiv.org/abs/cond-mat/0609543v1

J. Phys.: Condens. Matter 19, 145267 (2007).

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 4 figures, submitted to "Highly Frustrated Magnetism 2006" conference in Osaka

Scientific paper

10.1088/0953-8984/19/14/145267

We present a detailed symmetry analysis of the degeneracy lifting due to higher order spin exchanges in the pyrochlore lattice in applied magnetic field. Under the assumption of the 4 sublattice ordering, the criteria for a stable half-magnetization plateau are deduced. The higher order exchange terms may originate from spin-lattice coupling, or can describe quantum and thermal fluctuations.

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