Mode-locking of mobile discrete breathers.
We study numerically synchronization phenomena of mobile discrete breathers in dissipative nonlinear lattices periodically forced. When varying the driving intensity, the breather velocity generically locks at rational multiples of the driving frequency. In most cases, the locking plateau coincides with the linear stability domain of the resonant mobile breather and desynchronization occurs by the regular appearance of type-I intermittencies. However, some plateaus also show chaotic mobile breathers with locked velocity in the locking region. The addition of a small subharmonic driving tames the locked chaotic solution and enhances the stability of resonant mobile breathers.
Zueco
D
D
Departamento de Física de la Materia Condensada, Universidad de Zaragoza, Spain.
Martínez
P J
PJ
Floría
L M
LM
Falo
F
F