arXiv 0905.44742009-05-27nlin.PS

Bulk and surface magnetoinductive breathers in binary metamaterials

M. I. Molina, N. Lazarides, G. P. Tsironis

备注：: 10 pages, 16 figures
DOI：: 10.1103/PhysRevE.80.046605

英文摘要：

We study 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 differ in the size of their slits and this leads to different resonant frequencies. In the framework of the rotating-wave approximation (RWA) we construct several types of breather excitations for both the energy-conserved and the dissipative-driven systems by continuation of trivial breather solutions from the anticontinuous limit to finite couplings. Numerically-exact computations that integrate the full model equations confirm the quality of the RWA results. Moreover, it is demonstrated that discrete breathers can spontaneously appear in the dissipative-driven system as a results of a fundamental instability.

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