  This study investigated the hybridization between an axion and plasmon
polariton, attributed to the coupling achieved by combining modified
electrodynamics and hydrodynamic approaches on a plasmon-polariton in a
graphene periodic structure. The enhancement of the effective coupling was also
studied. Furthermore, corrections for the axion and the lowest plasmon
-polariton hybridization state spectra have been presented. An observable was
proposed to detect axions, which is significant even when the effective
coupling is not large, especially as the axion mass decreases. The study shows
that the resulting structure provides a sensitive and wide-mass-spectrum
platform for detecting axions at the sub-meV scale.
