Fano-like anti-resonances in strongly coupled binary Coulomb systems

Silvestri, L. and Kalman, Gabor J. and Donkó, Zoltán and Hartmann, Péter and Kaehlert, Hanno (2015) Fano-like anti-resonances in strongly coupled binary Coulomb systems. EUROPHYSICS LETTERS, 109. pp. 1-5. ISSN 0295-5075

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Abstract

Molecular-dynamics (MD) simulations of a strongly coupled binary ionic mixture have revealed the appearance of sharp minima in the species-resolved dynamical density fluctua- tion spectra. This phenomenon is reminiscent of the well-known Fano anti-resonance, occurring in various physical processes. We give a theoretical analysis using the quasi-localized charge approximation, and demonstrate that the observed phenomenon in the equilibrium spectrum is a novel manifestation of the Fano mechanism, that occurs at characteristic frequencies of the system different from the conventional classical Fano frequencies.

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