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Phonon Modes and Infrared Absorption in the Coupled System Film–Substrate
Author(s) -
Grosse H.H.,
Jäger E.,
Telloke U.
Publication year - 1981
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.2221040128
Subject(s) - infrared , substrate (aquarium) , diatomic molecule , phonon , absorption (acoustics) , coupling (piping) , materials science , infrared spectroscopy , molecular vibration , coupling constant , constant (computer programming) , optics , molecular physics , chemistry , physics , condensed matter physics , molecule , quantum mechanics , raman spectroscopy , oceanography , geology , computer science , metallurgy , programming language
The system optical film–substrate and its vibrational modes are investigated with the help of the simple model of two coupled diatomic linear chains. It is possible to derive an analytical equation for the determination of the frequencies. But this equation can be solved only numerically. The vibrational modes, their frequencies, and the absorption in the infrared are discussed, especially the influence of the interchain coupling constant on these quantities.