Phonon transmission via a three-terminal junction in low dimensional wave-guides

M. Belhadi, A. Khater, J. Hardy, K. Maschke

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Coherent phonon scattering and transmission via a three-terminal junction in low-dimensional structures is investigated. The model system consists of two-dimensional crystalline wave-guides, constructed of double atomic chains that are joined together by a nanostructured T-shaped junction. The matching method theoretical approach is used to study the dynamics of the system. A calculation is presented for the coherent reflection and transmission scattering probabilities of the system phonons, as elements of a Landauer type scattering matrix. The scattering and transmission spectra via the T-shaped junction are analyzed as a function of the incident frequency per propagating mode of the perfect wave-guides. Our results show that the junction is an effective phonon splitter and suggest that its characteristics may be controlled by varying its nanometric parameters. Asymmetric Fano-like resonances are observed in the spectra which result from the coherent coupling between the localized modes of the T-shaped junction and the propagating modes of the wave-guides.

Original languageEnglish
Pages (from-to)185-190
Number of pages6
JournalEPJ Applied Physics
Volume35
Issue number3
DOIs
Publication statusPublished - Sep 2006
Externally publishedYes

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Scattering
Coherent scattering
Phonon scattering
Phonons
scattering
Crystalline materials
S matrix theory
phonons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Phonon transmission via a three-terminal junction in low dimensional wave-guides. / Belhadi, M.; Khater, A.; Hardy, J.; Maschke, K.

In: EPJ Applied Physics, Vol. 35, No. 3, 09.2006, p. 185-190.

Research output: Contribution to journalArticle

Belhadi, M. ; Khater, A. ; Hardy, J. ; Maschke, K. / Phonon transmission via a three-terminal junction in low dimensional wave-guides. In: EPJ Applied Physics. 2006 ; Vol. 35, No. 3. pp. 185-190.
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