title: Bulk and surface magnetoinductive breathers in binary metamaterials.
abstract: We investigate theoretically the existence of bulk and surface discrete breathers in a one-dimensional magnetic metamaterial comprised of a periodic binary array of split-ring resonators; the two types of resonators used have different resonant frequencies caused by unequal slit sizes. We use the rotating-wave approximation and construct several types of breather excitations both for the energy-conserving as well as dissipative-driven case; we corroborate these approximate results trough numerically exact computations. We demonstrate that discrete breathers can appear spontaneously in the dissipative-driven system as a result of a fundamental instability.
authors.affiliation: Departamento de Física, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
authors.forename: M I
authors.initials: MI
authors.lastname: Molina
authors.forename: N
authors.initials: N
authors.lastname: Lazarides
authors.forename: G P
authors.initials: GP
authors.lastname: Tsironis
mesh_terms: D003198:Computer Simulation; D004574:Electromagnetic Fields; D008280:Magnetics; D008420:Manufactured Materials; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D009991:Oscillometry / Q000379:methods*; D012542:Scattering, Radiation