Limitations of the Giant Spin Hamiltonian in Explaining Magnetization Tunneling in a Single-Molecule Magnet

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dc.creatorWilson, A.
dc.creatorLawrence, J.
dc.creatorYang, E-C.
dc.creatorNakano, M.
dc.creatorHendrickson, D. N.
dc.creatorHill, S.
dc.date2006-06-09
dc.date.accessioned2026-07-07T07:12:34Z
dc.date.available2026-07-07T07:12:34Z
dc.descriptionEPR studies of a Ni4 single-molecule magnet yield the zero-field-splitting (zfs) parameters, D, B40 and B44, based on a giant spin approximation (GSA) with S = 4. Experiments on an isostructural Ni-doped Zn4 crystal establish the Ni(II) ion zfs parameters. The 4th-order zfs parameters in the GSA arise from the interplay between the Heisenberg interaction, Js1.s2, and the 2nd-order single-ion anisotropy, giving rise to mixing of higher lying states into the S = 4 state. Consequently, J directly influences the zfs in the ground state, enabling its direct determination by EPR.
dc.description5 pages, including figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0606252
dc.identifierhttp://arxiv.org/abs/cond-mat/0606252
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/112118
dc.subjectMesoscale and Nanoscale Physics
dc.titleLimitations of the Giant Spin Hamiltonian in Explaining Magnetization Tunneling in a Single-Molecule Magnet
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