Phenomenological plasmon broadening and relation to the dispersion

Abstract

Pragmatic ways of including lifetime broadening of collective modes in the electron liquid are critically compared. Special focus lies on the impact of the damping parameter onto the dispersion. It is quantitatively exemplified for the two-dimensional case, for both, the charge (`sheet'-)plasmon and the spin-density plasmon. The predicted deviations fall within the resolution limits of advanced techniques.

6 pages, 4 figures

References in corpus (5)

• Graphene plasmonics
• Graphene Plasmonics: Challenges and Opportunities
• How to face the loss in plasmonics and metamaterials
• Long-lived spin plasmons in a spin-polarized two-dimensional electron gas
• Inhomogeneous Gilbert damping from impurities and electron-electron interactions

Cited by in corpus (1)

• Dynamic correlations in the highly dilute 2D electron liquid: loss function, critical wave vector and analytic plasmon dispersion