Absorption effects on the Mie plasmon-polariton modes in two-dimensional plasmonic photonic crystals

We have theoretically investigated the absorption effects on the Mie plasmonic resonances in single metallic shell rods and two-dimensional plasmonic photonic crystals. Present results show that Mie resonances stemming from the dipolar and quadrupolar contributions are robust to absorption effects not only in single scatterers but also in the case of two-dimensional plasmonic photonic crystals. On the other hand, we have found that the extinction (Qext) and scattering (Qsca) efficiencies corresponding to an isolated metallic rod may be employed to predict the frequency range for flat or slow dispersive photonic bands in plasmonic photonic crystals, indicating a robust behavior of such resonant modes.