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Effects of a thin curved transition layer on surface polaritons. Local states
Author(s) -
Wendler L.,
Pechstedt E.
Publication year - 1986
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.2221340230
Subject(s) - polariton , condensed matter physics , transition layer , dispersion relation , layer (electronics) , surface plasmon polariton , dipole , surface (topology) , electric field , physics , resonance (particle physics) , field (mathematics) , dispersion (optics) , substrate (aquarium) , local field , materials science , optics , surface plasmon , geometry , quantum mechanics , plasmon , mathematics , geology , nanotechnology , oceanography , pure mathematics
When a thin curved transition layer is placed on a semi‐infinite dipole‐active substrate, local states exist in the spectrum of surface polaritons. The dispersion relation and the electromagnetic fields are derived analytically in an explicit form for the case of resonance of the transition layer excitations with the surface polaritons. The spatial dependence of the electric field of the local states is presented in graphical form. It is shown that the field is localized sharply and enhanced within the characteristic distance of the valley in the surface profile of the transition layer.