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Plasmon Dispersion in Trans‐Polyacetylene
Author(s) -
Haase M.,
Taut M.
Publication year - 1989
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.2221530123
Subject(s) - polyacetylene , perpendicular , dispersion (optics) , plasmon , materials science , momentum (technical analysis) , molecular physics , drop (telecommunication) , optics , condensed matter physics , optoelectronics , chemistry , physics , geometry , telecommunications , mathematics , finance , doping , computer science , economics
By frequency momentum analysis, the plasmon dispersion of crystalline trans‐polyacetylene is calculated for q parallel and perpendicular to the chains. Both experimentally observed features: linear dispersion at medium q , and a drop for small q , are obtained. It is suggested that the latter feature is much more pronounced for q perpendicular to the chains (not investigated experimentally) than parallel.