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Nonlinear surface acoustic wave in anharmonic medium with two-phonon resonance transition

G. T. Adamashvili

Tbilisi Ivane Javakhishvili State University

Abstract: A mechanism that generates a nonlinear wave in an anharmonic dispersive medium with two-phonon resonance transition is proposed. A surface acoustic wave propagating in a film-substrate system is considered. It is shown that for an acoustic wave of relatively low energy a breather state is formed. Phase modulation occurs. The conditions of realization of the phenomenon are given.

Received: 03.07.1992

 English version: Theoretical and Mathematical Physics, 1994, 99:1, 449–456

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