Plasmonic losses can be attributed to several factors:
Intrinsic Losses: These are due to the inherent properties of the metal, such as electron-electron and electron-phonon interactions. Radiative Losses: These occur when plasmons decay into photons, which are then radiated away from the nanostructure. Non-radiative Losses: These involve energy transfer to other forms, such as heat, due to processes like Landau damping.
