Nonlinear response of superparamagnets with finite damping: an analytical approach

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dc.creatorGarcia-Palacios, J. L.
dc.creatorGaranin, D. A.
dc.date2004-04-19
dc.date.accessioned2026-07-07T02:57:42Z
dc.date.available2026-07-07T02:57:42Z
dc.descriptionThe strongly damping-dependent nonlinear dynamical response of classical superparamagnets is investigated by means of an analytical approach. Using rigorous balance equations for the spin occupation numbers a simple approximate expression is derived for the nonlinear susceptibility. The results are in good agreement with those obtained from the exact (continued-fraction) solution of the Fokker-Planck equation. The formula obtained could be of assistance in the modelling of the experimental data and the determination of the damping coefficient in superparamagnets.
dc.description7 PR pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0404445
dc.identifierhttp://arxiv.org/abs/cond-mat/0404445
dc.identifierPhys. Rev. B 70, 064415 (2004)
dc.identifierdoi:10.1103/PhysRevB.70.064415
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23776
dc.subjectStatistical Mechanics
dc.subjectSoft Condensed Matter
dc.titleNonlinear response of superparamagnets with finite damping: an analytical approach
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