Higher harmonics of the magnetoplasmon in strongly coupled Coulomb and Yukawa systems

TL;DR

This paper investigates the generation of higher harmonics of the magnetoplasmon in strongly coupled Coulomb and Yukawa systems, comparing theoretical predictions with simulations and exploring factors affecting mode excitation and observability.

Contribution

It extends previous work by analyzing higher harmonics over a broader frequency range and includes the effects of coupling, structure, thermal energy, and friction on mode spectra.

Findings

Higher harmonics observed over larger frequency ranges.

Theoretical predictions align with simulation results.

Friction influences mode spectra and experimental detection.

Abstract

The generation of higher harmonics of the magnetoplasmon frequency which has recently been reported in strongly coupled two-dimensional Yukawa systems is investigated in detail and, in addition, extended to two-dimensional Coulomb systems. We observe higher harmonics over a much larger frequency range than before and compare the theoretical prediction with the simulations. The influence of the coupling, structure, and thermal energy on the excitation of these modes is examined in detail. We also report on the effect of friction on the mode spectra to make predictions about the experimental observability of this new effect.