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Dispersion and Damping Properties of Plasmon Polaritons in Superlattice Structures II. Semi‐Infinite Superlattice
Author(s) -
Haupt R.,
Wendler L.
Publication year - 1987
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221420212
Subject(s) - superlattice , polariton , surface plasmon polariton , condensed matter physics , plasmon , dispersion relation , surface plasmon , surface plasmon resonance , dispersion (optics) , physics , localized surface plasmon , materials science , optics , quantum mechanics , nanoparticle
The dispersion and damping properties of surface plasmon‐polaritons in semi‐infinite superlattices are analyzed using a local theory with retardation. The position of the dispersion curves of the surface plasmon‐polaritons relatively to the bands of the plasmon‐polaritons in infinite super‐lattices is discussed. It is shown that in a definite range of the thickness ratio of the single‐layers in an infinite superlattice a degeneracy point of the two plasmon‐polariton bands exists which is crossed by one of two surface modes existing in semi‐infinite superlattices. An analytic expression for the damping function is derived by means of a perturbative method. The different behaviour of the damping of surface plasmon‐polaritons in various semi‐infinite superlattice structures is discussed. The dispersion curves, the electromagnetic fields, and the damping function are calculated and presented in graphical form.