Discrete Breathers in magnetic metamaterials in one and two dimensions.

ORAL

Abstract

We study the formation, stability as well as mobility of discrete breathers (DBs) in magnetic metamaterials in one and two dimensions. Magnetic metamaterials consisted by split ring resonators (SRRs) exhibit large magnetic response at Terahertz and optical frequencies. We use nonlinear arrays of SRRs where DBs arise as a result of the nonlinearity and discreteness. We consider different geometries of SRRs in both dimensions and find several different types of Hamiltonian nonlinear excitations such as dark, single-site and multibreathers. We also consider the dissipative version of the problem where DBs are formed as well. In the latter case, DBs locally alter the paramagnetic character of MMs to a diamagnetic.

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Authors

  • Giorgos Tsironis

    • University of Crete and FORTH
    • Department of Physics and FORTH, University of Crete, Greece
    • University of Crete, and Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas
    • Physics Department, University of Crete, and IESL, Foundation of Research and Technology, P. O. Box 2208, 71003, Heraklion, Greece

  • Maria Eleftheriou

    • University of Crete, and Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas
    • Physics Department, University of Crete, and IESL, Foundation of Research and Technology, P. O. Box 2208, 71003, Heraklion, Greece

  • Nikos Lazarides

    • University of Crete, and Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas
    • Physics Department, University of Crete, and IESL, Foundation of Research and Technology, P. O. Box 2208, 71003, Heraklion, Greece