Topological Quenching of Spin Tunneling in Mn_12-acetate Molecules

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dc.creatorPark, Chang-Soo
dc.creatorGarg, Anupam
dc.date2000-09-29
dc.date.accessioned2026-07-07T02:38:52Z
dc.date.available2026-07-07T02:38:52Z
dc.descriptionWe investigate the topological quenching of spin tunneling in Mn_12-acetate molecules with an applied magnetic field along the hard axis. The model Hamiltonian describing this system has a fourth-order term due to the tetragonal anisotropy. We treat this model using the discrete phase integral formalism in which the Schrodinger equation corresponding to the Hamiltonian becomes a nine-term recursion relation. We solve this recursion relation and find that the tunnel splitting is quenched at certain values of the applied field. We also present a qualitative treatment based on the instanton approach.
dc.identifierhttps://arxiv.org/abs/cond-mat/0009478
dc.identifierhttp://arxiv.org/abs/cond-mat/0009478
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/16844
dc.subjectMesoscale and Nanoscale Physics
dc.titleTopological Quenching of Spin Tunneling in Mn_12-acetate Molecules
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