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ORDER BY DISORDER IN AN ANISOTROPIC PYROCHLORE LATTICE ANTIFERROMAGNET

BRAMWELL, ST; GINGRAS, MJP; REIMERS, JN; (1994) ORDER BY DISORDER IN AN ANISOTROPIC PYROCHLORE LATTICE ANTIFERROMAGNET. In: JOURNAL OF APPLIED PHYSICS. (pp. 5523 - 5525). AMER INST PHYSICS

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Abstract

The properties of the classical Heisenberg pyrochlore lattice antiferromagnet with local planar single ion anisotropy are discussed. The zero temperature ground state is found to be macroscopically degenerate and without long range order. Monte Carlo simulations are used to investigate the properties of the system at finite temperature. We find that thermal fluctuations select a subset of the ground state manifold, and induce a first-order phase transition to a conventional Neel ground state.

Type:Proceedings paper
Title:ORDER BY DISORDER IN AN ANISOTROPIC PYROCHLORE LATTICE ANTIFERROMAGNET
Event:38th Annual Conference on Magnetism and Magnetic Materials (MMM 93)
Location:MINNEAPOLIS, MN
Dates:1993-11-15 - 1993-11-18
Keywords:KAGOME ANTIFERROMAGNET, NEUTRON-DIFFRACTION, FEF3
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy

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