Microwave whirlpools in a rectangular-waveguide cavity with a thin ferrite disk

Details Microwave whirlpools in a rectangular-waveguide cavity with a thin ferrite disk Microwave whirlpools in a rectangular-waveguide cavity with a thin ferrite disk

2007-07-09

arxiv.org/abs/0707.1236v1

Physical Review E 74, 036620 (2006)

Physics

Classical Physics

Scientific paper

10.1103/PhysRevE.74.036620

We study a three dimensional system of a rectangular-waveguide resonator with an inserted thin ferrite disk. The interplay of reflection and transmission at the disk interfaces together with material gyrotropy effect, gives rise to a rich variety of wave phenomena. We analyze the wave propagation based on full Maxwell-equation numerical solutions of the problem. We show that the power-flow lines of the microwave-cavity field interacting with a ferrite disk, in the proximity of its ferromagnetic resonance, form whirlpool-like electromagnetic vortices. Such vortices are characterized by the dynamical symmetry breaking. The role of ohmic losses in waveguide walls and dielectric and magnetic losses in a disk is a subject of our investigations.

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