title: Excitation of vortices using linear and nonlinear magnetostatic waves.
abstract: It is shown that stationary vortex structures can be excited in a ferrite film, in the important centimeter and millimeter wavelength ranges. It is shown that both linear and nonlinear structures can be excited using a three-beam interaction created with circular antennas. These give rise to a special phase distribution created by linear and nonlinear mixing. An interesting set of three clockwise rotating vortices joined by one counter-rotating one presents itself in the linear regime: a scenario that is only qualitatively changed by the onset of nonlinearity. It is pointed out that control of the vortex structure, through parametric coupling, based upon a microwave resonator, is possible and that there are many interesting possibilities for applications.
authors.affiliation: Joule Physics Laboratory, University of Salford, Salford, Greater Manchester, M5 4WT, United Kingdom. a.d.boardman@salford.ac.uk
authors.forename: A D
authors.initials: AD
authors.lastname: Boardman
authors.forename: Yu G
authors.initials: YG
authors.lastname: Rapoport
authors.forename: V V
authors.initials: VV
authors.lastname: Grimalsky
authors.forename: B A
authors.initials: BA
authors.lastname: Ivanov
authors.forename: S V
authors.initials: SV
authors.lastname: Koshevaya
authors.forename: L
authors.initials: L
authors.lastname: Velasco
authors.forename: C E
authors.initials: CE
authors.lastname: Zaspel