Evidence of Fano-like interference phenomena in locally resonant materials

Cécile Goffaux, Jose Sanchez-Dehesa, A. Levy Yeyati, Philippe Lambin, Abdelkrim Khelif, Jérôme Vasseur, Rahran Djafari-Rhouani

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    Résumé

    Sonic crystals consisting of three-dimensional arrays of units which exhibit localized resonances have been discovered recently. Here, it is shown that their two-dimensional counterparts behave in a similar manner. Particularly, it is observed that the transmittance spectra show very asymmetric peaks which are explained as a Fano-like interference phenomenon. A finite difference time domain method is employed to perform a comprehensive study of the resonance line shape as a function of the mass density of the structural units. Also, a simple analytical model is introduced to give an intuitive account of the origin of the interference phenomenon.
    langue originaleAnglais
    Pages (de - à)225501-1-4
    journalPhysical review letters
    Volume88
    Numéro de publication22
    Les DOIs
    Etat de la publicationPublié - 2002

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