NONLINEAR-THEORY OF SURFACE MAGNETOPLASMA WAVES PROPAGATING AT A SOLID-STATE PLASMA-METAL INTERFACE

The results associated with the nonlinear theory of surface magnetopla sma waves (SW) propagating across an external magnetic field at a soli d-state plasma-metal interface are presented. In a weak nonlinearity a pproximation using a formalism of third-order nonlinear susceptibiliti es the nonliner frequency shift of the SW is calculated. The possible nonlinear mechanisms which influence the SW propagation are discussed. In several cases the comparison of the obtained results with previous papers gives a possibility to estimate the third order nonlinear susc eptibility of the nonlinear medium bounded by a metal.