| Identifiant de l'article : |
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ensl-00366133, version 1 |
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| Identifiant arXiv : |
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arXiv:0903.1155 |
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| Domaine : |
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Physique/Matière Condensée/Mécanique statistique
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| Titre : |
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The Kasteleyn transition in three dimensions: spin ice in a [100] field |
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| Auteur(s) : |
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Ludovic D. C. Jaubert1, J. T. Chalker2, Peter C.W. Holdsworth1, R. Moessner3 |
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| Laboratoire : |
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| 1 : |
Phys-ENS - Laboratoire de Physique de l'ENS Lyon |
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| 2 : |
Theoretical Physics, Oxford University |
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| 3 : |
MPIPKS - Max-Plack-Institut für Physik komplexer Systeme |
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| Équipe de recherche : |
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[Physique théorique] |
| Résumé : |
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We discuss the nearest neighbour spin ice model in the presence of a magnetic field placed along the cubic [100] direction. As recently shown in Phys. Rev. Lett. 100, 067207, 2008, the symmetry sustaining ordering transition observed at low temperature is a three dimensional Kasteleyn transition. We confirm this with numerical data using a non-local algorithm that conserves the topological constraints at low temperature and from analytic calculations from a Bethe lattice of corner sharing tetrahedra . We present a thermodynamic description of the Kasteleyn transition and discuss the relevance of our results to recent neutron scattering experiments on spin ice materials. |
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Langue du texte
intégral : |
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Anglais |
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| Mots-clés : |
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spin ice – frustration – phase transition – Kasteleyn – magnetic field |
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| Contrat, financement : |
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European Science Foundation PESC/RNP/HFM |
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