Abstract
A theory is developed for the localized surface magnetic polaritons in hollow magnetic cylinders or tubes, in the presence of a longitudinal applied field. This involves solving for the dynamical response using the nondiagonal susceptibility tensor for a ferromagnet or antiferromagnet in Maxwell’s equations, with electromagnetic boundary conditions at the inner and outer tube surfaces. Results for wires and antiwires are deduced as limiting cases of this geometry. As the outer radius is increased, the surface polariton branches near the light line are reduced in frequency and the localization properties are modified due to strong retardation effects. Numerical applications are made to yttrium iron garnet and MnF2 materials.
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