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Phonon Conductance of Potassium- and Sodium-Doped Transpolyacetylene Chain
Joint Authors
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-14
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
A theoretical approach for the study of phonon dynamics and scattering properties of doped transpolyacetylene chain is presented.
The coherent reflection and transmission scattering cross-sections for phonons incident on the doped unit cell boundary are calculated in accordance with the Landauer-Buttiker electron scattering description, using the matching procedure with the nearest and next nearest neighbor elastic force constants.
This is done for two different dopants, namely, the potassium and sodium atoms.
Our numerical results yield an understanding of the transpolyacetylene chain dynamical properties and the effects on phonon conductance due to phonon incident on the doped unit cell boundary.
The coherent reflection and transmission coefficients show characteristic spectral features, depending on the cutoff frequencies for the propagating phonons and on the nature of the dopants.
They illustrate the occurrence of Fano resonances in the scattering spectra that result from the interactions of propagating elastic waves of the undoped transpolyacetylene chain with the localized modes due to the breakdown of the translation symmetry in the x direction.
American Psychological Association (APA)
Belhadi, M.& Kheffache, S.. 2012. Phonon Conductance of Potassium- and Sodium-Doped Transpolyacetylene Chain. ISRN Condensed Matter Physics،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-467729
Modern Language Association (MLA)
Belhadi, M.& Kheffache, S.. Phonon Conductance of Potassium- and Sodium-Doped Transpolyacetylene Chain. ISRN Condensed Matter Physics No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-467729
American Medical Association (AMA)
Belhadi, M.& Kheffache, S.. Phonon Conductance of Potassium- and Sodium-Doped Transpolyacetylene Chain. ISRN Condensed Matter Physics. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-467729
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-467729