Performance limitations of active plasmonic devices based on magnetic field detuning of the surface plasmon-polariton resonance in subwavelength semiconductor wires

摘要: Subwavelength plasmonic wires provide a very simple, ultracompact, and efficient platform for active plasmonics. We theoretically investigate magnetically switched transparency in subwavelength semiconductor wires. The main difficulty limiting the performance of magnetoplasmonic devices optical isolators is need to use strong magnetic field. reveal that required field intensity twice higher than planar interfaces determined by carrier mobility constituent does not directly depend on other material parameters such as coating dielectric permittivity, density, electron's effective mass. azimuthal can be excited direct electric current or an pump through Our finding points important limitations based magneto-optical