Nonlinear coupling between shear horizontal surface solitons and Rayleigh modes on elastic structures.

Based on a previous work [G.A. Maugin and H. Hadouaj, Phys. Rev. B44, 1266 (1991)], it is shown that a generalized Zakharov system (Zakharov's system of plasma physics with additional self-nonlinearity of the cubic type in the Schrodinger component equation) governs the (envelope) solitary-wave propagation of a primarily sheart-horizontally (SH) polarized, and secondarily sagittally polarized, surface wave at the top of and elastic structure made of a nonlinear substrate on which is perfectly bonded an elastic film of a slower material