Breakdown of an intermediate plateau in the magnetization process of anisotropic spin-1 Heisenberg dimer: theory vs. experiment

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dc.creatorStrecka, J.
dc.creatorHagiwara, M.
dc.creatorBalaz, P.
dc.creatorJascur, M.
dc.creatorNarumi, Y.
dc.creatorKimura, S.
dc.creatorKuchar, J.
dc.creatorKindo, K.
dc.date2007-12-13
dc.date2008-02-18
dc.date.accessioned2026-07-07T12:42:25Z
dc.date.available2026-07-07T12:42:25Z
dc.descriptionThe magnetization process of the spin-1 Heisenberg dimer model with axial and rhombic single-ion anisotropy terms is particularly investigated in connection with recent experimental high-field measurements performed on the single-crystal sample of the homodinuclear nickel(II) compound [Ni2(Medpt)2(ox)(H2O)2](ClO4)2.2H2O (Medpt=methyl-bis(3-aminopropyl)amine). The results obtained from the exact numerical diagonalization reveal a striking magnetization process with a marked spatial dependence on the applied magnetic field for arbitrary but non-zero single-ion anisotropy. It is demonstrated that the field range, which corresponds to an intermediate magnetization plateau emerging at a half of the saturation magnetization, basically depends on single-ion anisotropy terms as well as a spatial orientation of the applied field. The breakdown of the intermediate magnetization plateau is discussed at length in relation to the single-ion anisotropy strength.
dc.description16 pages, 6 figures, preprint submitted to Physica B
dc.identifierhttps://arxiv.org/abs/0712.2109
dc.identifierhttp://arxiv.org/abs/0712.2109
dc.identifierPhysica B 403 (2008) 3146-3153
dc.identifierdoi:10.1016/j.physb.2008.03.025
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220072
dc.subjectMaterials Science
dc.subjectStatistical Mechanics
dc.titleBreakdown of an intermediate plateau in the magnetization process of anisotropic spin-1 Heisenberg dimer: theory vs. experiment
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