ISSN:
1434-6036
Keywords:
63.20.Pw
;
81.20.Sh
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Starting from the extended SSH model that includes an external Coulomb potential arising from interchain charged solitons and counterions, the intrachain e-e interaction and the next neighbor hopping interactions, eight localized vibrational modes around the soliton lattice have been found for the doping levels from 3.33 at.% to 13.33 at.%. Among them three are infrared active and they can be used to interpret the three observed infrared absorption lines at 487, 1284 and 1362 cm−1. Furthermore, the frequencies of localized modes are decreased and their localizations are weakened when the dopant concentrations increase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01322430
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