Two Circular-Rotational Eigenmodes in Vortex Gyrotropic Motions in Soft Magnetic Nanodots

Simple item page
dc.creatorLee, Ki-Suk
dc.creatorKim, Sang-Koog
dc.date2007-12-05
dc.date2008-02-01
dc.date.accessioned2026-07-07T09:48:19Z
dc.date.available2026-07-07T09:48:19Z
dc.descriptionWe found, by micromagnetic numerical and analytical calculations, that the clockwise (CW) and counterclockwise (CCW) circular-rotational motions of a magnetic vortex core in a soft magnetic circular nanodot are the elementary eigenmodes existing in the gyrotropic motion with respect to the corresponding CW and CCW circular-rotational-field eigenbasis. Any steady-state vortex gyrotropic motions driven by a linearly polarized oscillating in-plane magnetic field in the linear regime can be perfectly understood according to the superposition of the two circular eigenmodes, which show asymmetric resonance characteristics reflecting the vortex polarization. The relative magnitudes in the amplitude and phase between the CCW and CW eigenmodes determine the elongation and orientation of the orbital trajectories of the vortex core motions, respectively, which trajectories vary with the polarization and chirality of the given vortex as well as the field frequency across the resonance frequency.
dc.description30 pages, 7 figures
dc.identifierhttps://arxiv.org/abs/0712.0758
dc.identifierhttp://arxiv.org/abs/0712.0758
dc.identifierPhys. Rev. B 78, 014405 (2008) (6 pages)
dc.identifierdoi:10.1103/PhysRevB.78.014405
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/164167
dc.subjectMaterials Science
dc.subjectOther Condensed Matter
dc.titleTwo Circular-Rotational Eigenmodes in Vortex Gyrotropic Motions in Soft Magnetic Nanodots
dc.typetext

Files

Collections

arXiv