Abstract : We examine the statistical mechanics of spin-ice materials with a [100] magnetic field. We show that the approach to saturated magnetisation is, in the low-temperature limit, an example of a 3D Kasteleyn transition, which is topological in the sense that magnetisation is changed only by excitations that span the entire system. We study the transition analytically and using a Monte Carlo cluster algorithm, and compare our results with recent data from experiments on Dy2Ti2O7.
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00176660
Contributeur : Ludovic Jaubert
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Soumis le : lundi 3 mars 2008 - 11:25:37
Dernière modification le : jeudi 19 avril 2018 - 14:54:03
Document(s) archivé(s) le : vendredi 24 septembre 2010 - 10:29:42
Ludovic Jaubert, J. T. Chalker, Peter Holdsworth, R. Moessner. A Three Dimensional Kasteleyn Transition: Spin Ice in a [100] Field. Physical Review Letters, American Physical Society, 2008, pp.067207. 〈10.1103/PhysRevLett.100.067207〉. 〈ensl-00176660v4〉
