Fig. 4: Plasmon dispersion curves.
From: Infrared plasmons in ultrahigh conductive PdCoO2 metallic oxide
Black points correspond to experimental plasmon frequencies, red stars to COMSOL simulation and blue diamonds to the model (Eq. (3) main text). Experimental, simulation and modeling dispersion well coincide at each wavevectors here measured.In the right axis the field enhancement factor FE = |Ep/Ei| where Ep is the electric field at the plasmonic resonance and Ei the incident field, is plotted vs. the experimental wavevectors q. The strong field enhancement suggests a SEIRA device applications for PdCoO2-based ribbon arrays7.
