Second plasmon and collective modes in binary Coulomb systems

G. J. Kalman, Z. Donkó, P. Hartmann, K. I. Golden

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Abstract

In a system consisting of two different charged species we identify the excitation of a second, low-frequency plasmon. At strong coupling the doublet of high-frequency (first) and low-frequency (second) plasmons replaces the single-plasmon excitation that prevails at weak coupling. We observe the formation of the second plasmon from the acoustic Goldstone-type mode associated with a short-range interaction as the range is extended to infinity.

Original languageEnglish
Article number35001
JournalEPL
Volume107
Issue number3
DOIs
Publication statusPublished - Aug 1 2014

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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