Abstract

A macroscopic theory of surface polaritons on semi-infinite magnetic media is presented. The general nature of surface polaritons on magnetic media is discussed. In the configuration k, M0, and n mutually perpendicular (where k is the propagation wavevector, M0 is the static magnetization of the medium, and n is the outward normal to the surface), the surface polaritons are TE modes with H elliptically polarized in the sagittal plane. The surface polaritons, which exist on a ferromagnetic insulator, exhibit nonreciprocal propagation characteristics of a medium with gyromagnetic permeability. A new branch of the surface polariton dispersion curve is demonstrated. The corresponding magnon type surface polaritons do not occur on a ferromagnetic metal. The possible experimental observation of the magnon type surface polariton modes on a ferromagnetic insulator is also discussed.

Keywords

PolaritonCondensed matter physicsMagnonSurface plasmon polaritonFerromagnetismPhysicsElectronSurface plasmonOpticsPlasmonQuantum mechanics

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Publication Info

Year
1973
Type
article
Volume
6
Issue
7
Pages
1266-1276
Citations
149
Access
Closed

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A. Hartstein, E. Burstein, A. A. Maradudin et al. (1973). Surface polaritons on semi-infinite gyromagnetic media. Journal of Physics C Solid State Physics , 6 (7) , 1266-1276. https://doi.org/10.1088/0022-3719/6/7/016

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DOI
10.1088/0022-3719/6/7/016