Fano-like anti-resonances in strongly coupled binary Coulomb systems. (22nd January 2015)

• Record Type: Journal Article
• Authors: Silvestri, L.; Kalman, G. J.; Donkó, Z.; Hartmann, P.; Kählert, H.
• Is Part Of: Europhysics letters. Volume 109:Number 1(2015:Jan.)
• Publication Date: 2015-01-22
• Subjects: 52.27.Gr -- 52.27.Cm -- 52.35.Fp; Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/109/15003
• Languages: English
• ISSNs: 0295-5075

Abstract

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 fluctuation 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.