Crossing and anti-crossing effects of polaritons in a magnetic-semiconductor superlattice influenced by an external magnetic field

摘要

Crossing and anti-crossing effects in dispersion characteristics of both bulkand surface polaritons in a magnetic-semiconductor superlattice influenced byan external static magnetic field being in the Faraday geometry are discussed.The bulk polaritons are classified as eigenwaves with right-handed andleft-handed elliptically polarized states, whereas the surface polaritons areconsidered as hybrid modes having a predominant effect of either magnetic orsemiconductor subsystem, and distinctions in dispersion characteristics of suchpolaritons are revealed involving the concept of critical points.