Mechanism of discrete breather excitation in driven micro-mechanical cantilever arrays

POSTER

Abstract

We study the pathway of generating discrete breathers (also known as intrinsic localized modes ``ILMs'') in damped and driven micro-mechanical cantilever arrays. Using the concept of the nonlinear response manifold we provide a systematic way to find the optimal parameter regime in damped and driven lattices where discrete breathers exist. Our results show that discrete breathers appear via a new instability of the manifold, different from the anticipated modulational instability known for conservative systems. We present several ways of exciting breathers, and compare also to experimental studies in anti-ferromagnetic layered systems.

Authors

  • Panagiotis Maniadis

    • Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
    • Theoretical Division and Center for Nonlinear Studies,Los Alamos National Laboratory, Los Alamos, New Mexico 87545.

  • Sergej Flach

    • Max-Planck-Institut fur Physik Komplexer Systeme, Dresden, Germany.