title: Influence of dipolar interaction on vortex dynamics in arrays of ferromagnetic disks.
abstract: The influence of the magnetostatic interaction on vortex dynamics in arrays of ferromagnetic disks is investigated by means of a broadband ferromagnetic-resonance setup. Transmission spectra reveal a strong dependence of the resonance frequency of vortex-core motion on the ratio between the center-to-center distance and the element size. For a decreasing ratio, a considerable broadening of the absorption peak is observed following an inverse sixth power law. An analogy between the vortex system and rotating dipoles is confirmed by micromagnetic simulations.
authors.affiliation: Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg,Jungiusstrasse 11, 20355 Hamburg, Germany. andreas.vogel@physnet.uni-hamburg.de
authors.forename: Andreas
authors.initials: A
authors.lastname: Vogel
authors.forename: André
authors.initials: A
authors.lastname: Drews
authors.forename: Thomas
authors.initials: T
authors.lastname: Kamionka
authors.forename: Markus
authors.initials: M
authors.lastname: Bolte
authors.forename: Guido
authors.initials: G
authors.lastname: Meier