Surface electromagnetic states in the photonic crystal–ferrite–plasma-like medium structure

Frequencies of the surface electromagnetic states in the photonic crystal–ferrite–plasma-like medium structure were studied both theoretically and experimentally as a function of the ferrite layer thickness, external dc magnetic field and temperature. The photonic crystal was a periodic stack of a f...

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Veröffentlicht in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2014-07, Vol.40 (7), p.667-673
Hauptverfasser: Averkov, Yu. O., Tarapov, S. I., Kharchenko, A. A., Yakovenko, V. M.
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Sprache:eng
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Zusammenfassung:Frequencies of the surface electromagnetic states in the photonic crystal–ferrite–plasma-like medium structure were studied both theoretically and experimentally as a function of the ferrite layer thickness, external dc magnetic field and temperature. The photonic crystal was a periodic stack of a finite number of unit cells, each consisting of two different nonmagnetic dielectrics. A nonmagnetic semiconductor played the role of a plasma-like medium. A dc magnetic field was applied parallel to the ferrite layer. The propagation direction of an electromagnetic wave was perpendicular to the dc magnetic field with the electrical component of a microwave field parallel to the magnetic field. An analytical expression relating the frequencies of the surface electromagnetic states to the structural parameters and the magnitude of the dc magnetic field value was derived within the framework of the model of non-conducting and magnetized to saturation ferrite. It was predicted that the states under study are multimodal within a single photonic-crystal band gap.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.4890364