Excitation of vortices using linear and nonlinear magnetostatic waves.
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.
Boardman
A D
AD
Joule Physics Laboratory, University of Salford, Salford, Greater Manchester, M5 4WT, United Kingdom. a.d.boardman@salford.ac.uk
Rapoport
Yu G
YG
Grimalsky
V V
VV
Ivanov
B A
BA
Koshevaya
S V
SV
Velasco
L
L
Zaspel
C E
CE