Excitation of vortices using linear and nonlinear magnetostatic waves

Details Excitation of vortices using linear and nonlinear magnetostatic waves Excitation of vortices using linear and nonlinear magnetostatic waves

2006-02-27

arxiv.org/abs/cond-mat/0602637v1

PHYSICAL REVIEW E 71, 026614 (2005)

Physics

Condensed Matter

Materials Science

28 pages, 13 figures

Scientific paper

10.1103/PhysRevE.71.026614

It is shown that stationary vortex structures can be excited in a ferrite film. This is the first proposal for creating vortex structures in the important cm and mm wavelength ranges. It is shown that both linear and nonlinear structures can be excited using a three-beam interaction created with circular antennae. 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.

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