The photon propagator describing the interaction of light with a monolayer of metal particles (island film) is calculated in the coherent potential approximation. It is shown that the shift in the frequency peak of a dipole surface plasmon for a monolayer particle relative to the analogous frequency of the plasma resonance for an isolated particle is not the only manifestation of the influence of neighboring particles. Neighboring particles also produce a bimodal structure in the spectrum line of the plasmon resonance. The possibility of fine structure in the plasmon resonance spectrum lines is predicted.
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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 85, No. 2, pp. 341–346, March–April, 2018.
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Маksimenko, V.V., Zagaynov, V.А., Semina, P.N. et al. Plasmon-Polaritons in Island Metal Films: A Solution in the Framework of the Coherent Potential Approximation. J Appl Spectrosc 85, 355–360 (2018). https://doi.org/10.1007/s10812-018-0656-y
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DOI: https://doi.org/10.1007/s10812-018-0656-y