SELF-LOCALIZED NONLINEAR SURFACE MAGNETIC POLARITONS IN A FERROMAGNETIC MEDIUM

The properties of electromagnetic waves propagating in a semibounded, nonlinear, ferromagnetic medium are investigated. It is shown that und er certain conditions the interaction between the spin and electromagn etic waves results in the localization of volume polaritons near the s urface. Self-localization of surface polaritons due to the nonlinear p roperties of the medium occurs thereby. The nonlinear Schrodinger equa tion for nonlinear surface and volume polaritons is derived, and the c onditions under which solitons of these waves exist are determined. Th e wave intensity required to observe the predicted effects is estimate d. (C) 1998 American Institute of Physics. [S1063-7834(98)02410-1].