title: Explosive dynamics and localization of wave triads in a coupled magnetoelastic system.
abstract: The dynamics of three-wave parametric coupling is considered on an example of nonequilibrium magnetostrictive medium under electromagnetic pumping. Subthreshold and supercritical mode of three-wave excitation are described analytically and simulated numerically for a triad of magnetoelastic waves. Theoretical analysis of the supercritical mode shows that space-time development of three-wave excitation in such a nonequilibrium system has the character of explosive instability and localization of "positive energy" waves.
authors.affiliation: Joint European Laboratory LEMAC, Institut d'Electronique, de Micro-électronique et de Nanotechnologie (IEMN-DOAE-UMR CNRS 8520), Ecole Centrale de Lille, 59651 Villeneuve d'Ascq, France.
authors.forename: V
authors.initials: V
authors.lastname: Preobrazhensky
authors.forename: O Bou
authors.initials: OB
authors.lastname: Matar
authors.forename: P
authors.initials: P
authors.lastname: Pernod