Phys. Rev. Lett. 90, 084101 (2003) [4 pages]Fano Resonances with Discrete BreathersReceived 15 November 2002; published 27 February 2003 A theoretical study of linear wave scattering by time-periodic spatially localized excitations (discrete breathers) is presented. A peculiar effect of total reflection occurs due to a Fano resonance when a localized state originating from closed channels resonates with the open channel. For the discrete nonlinear Schrödinger chain, we give an analytical result for the frequency dependence of the transmission coefficient, including the possibility of resonant reflection. We extend the analysis to chains of weakly coupled anharmonic oscillators and discuss the relevance of the effect for electronic transport spectroscopy of mesoscopic systems. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.084101
DOI:
10.1103/PhysRevLett.90.084101
PACS:
05.45.–a, 42.25.Bs, 73.23.–b
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