Metamagnetic phase transition of the antiferromagnetic Heisenberg icosahedron

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dc.creatorSchröder, Christian
dc.creatorSchmidt, Heinz-Jürgen
dc.creatorSchnack, Jürgen
dc.creatorLuban, Marshall
dc.date2005-01-24
dc.date.accessioned2026-07-07T06:25:41Z
dc.date.available2026-07-07T06:25:41Z
dc.descriptionThe observation of hysteresis effects in single molecule magnets like Mn$_{12}$-acetate has initiated ideas of future applications in storage technology. The appearance of a hysteresis loop in such compounds is an outcome of their magnetic anisotropy. In this Letter we report that magnetic hysteresis occurs in a spin system without any anisotropy, specifically, where spins mounted on the vertices of an icosahedron are coupled by antiferromagnetic isotropic nearest-neighbor Heisenberg interaction giving rise to geometric frustration. At T=0 this system undergoes a first order metamagnetic phase transition at a critical field $\Bcrit$ between two distinct families of ground state configurations. The metastable phase of the system is characterized by a temperature and field dependent survival probability distribution.
dc.description4 pages, 4 figures, submitted to Physical Review Letters
dc.identifierhttps://arxiv.org/abs/cond-mat/0501558
dc.identifierhttp://arxiv.org/abs/cond-mat/0501558
dc.identifierPhys. Rev. Lett. 94, 207203 (2005)
dc.identifierdoi:10.1103/PhysRevLett.94.207203
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96898
dc.subjectMaterials Science
dc.titleMetamagnetic phase transition of the antiferromagnetic Heisenberg icosahedron
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