Spin Freezing in Geometrically Frustrated Antiferromagnets with Weak Disorder

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dc.creatorSaunders, T. E.
dc.creatorChalker, J. T.
dc.date2006-12-18
dc.date.accessioned2026-07-07T07:56:35Z
dc.date.available2026-07-07T07:56:35Z
dc.descriptionWe investigate the consequences for geometrically frustrated antiferromagnets of weak disorder in the strength of exchange interactions. Taking as a model the classical Heisenberg antiferromagnet with nearest neighbour exchange on the pyrochlore lattice, we examine low-temperature behaviour. We show that random exchange generates long-range effective interactions within the extensively degenerate ground states of the clean system. Using Monte Carlo simulations, we find a spin glass transition at a temperature set by the disorder strength. Disorder of this type, which is generated by random strains in the presence of magnetoelastic coupling, may account for the spin freezing observed in many geometrically frustrated magnets.
dc.description4 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0612458
dc.identifierhttp://arxiv.org/abs/cond-mat/0612458
dc.identifierPhysical Review Letters 98, 157201 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.157201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/127364
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleSpin Freezing in Geometrically Frustrated Antiferromagnets with Weak Disorder
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