Low temperature specific heat of the molecular cluster Fe$_{8}$: contribution of the local field

Simple item page
dc.creatorGomes, A. M.
dc.creatorNovak, M. A.
dc.creatorNunes, W. C.
dc.creatorRapp, R. E.
dc.date1999-12-13
dc.date.accessioned2026-07-07T03:15:39Z
dc.date.available2026-07-07T03:15:39Z
dc.descriptionWe present low temperature specific heat and ac-susceptibility measurements on Fe$_{8}$ powdered sample. Below 1.3 K, superparamagnetic blocking effects as well as an excess specific heat contribution are evident. The latter is attributed to a splitting of the ground state doublet in an inhomogeneous local field of hyperfine and dipolar origin. The local field contributions are evident in the resonances observed in the field dependent ac-susceptibility and specific heat below 0.5 K. The low temperature Schottky contribution allowed us to check the crystal field parameters of effective spin Hamiltonians, recently proposed to simulate EPR and inelastic neutron scattering experiments.
dc.description16 pages, 6 figures, submitted to PRB
dc.identifierhttps://arxiv.org/abs/cond-mat/9912224
dc.identifierhttp://arxiv.org/abs/cond-mat/9912224
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/30062
dc.subjectMesoscale and Nanoscale Physics
dc.titleLow temperature specific heat of the molecular cluster Fe$_{8}$: contribution of the local field
dc.typetext

Files

Collections

arXiv