Modeling of polarization-specific phonon transmission through interfaces / Zhen Huang in Journal of heat transfer, Vol. 133 N° 11 (Novembre 2011)  

Public ISBD [article]  inJournal of heat transfer > Vol. 133 N° 11 (Novembre 2011) . - pp. [114502/1-3] Titre : Modeling of polarization-specific phonon transmission through interfaces Type de document : texte imprimé Auteurs : Zhen Huang, Auteur ; Jayathi Y. Murthy, Auteur ; Timothy S. Fisher, Auteur Année de publication : 2012 Article en page(s) : pp. [114502/1-3] Note générale : Physique Langues : Anglais (eng) Mots-clés : Phonon Green's function Polarization-specific Transmission Index. décimale : 536 Chaleur. Thermodynamique Résumé : In this work, the atomistic Green's function method is extended to compute transmission functions for each phonon polarization. The eigenvectors and eigenvalues of the overall density of states matrices are manipulated to yield a density of states matrix for each polarization. A decomposed self-energy is calculated from the density of states matrix for each polarization and used to calculate the transmission function for a particular phonon branch. In a pure bulk material such as silicon, each transmission function exhibits a frequency-independent value of unity. In heterogeneous bulk materials, the transmission function is reduced significantly due to the junction of dissimilar materials. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000133000011 [...] [article] Modeling of polarization-specific phonon transmission through interfaces [texte imprimé] / Zhen Huang, Auteur ; Jayathi Y. Murthy, Auteur ; Timothy S. Fisher, Auteur . - 2012 . - pp. [114502/1-3]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 11 (Novembre 2011) . - pp. [114502/1-3] Mots-clés : Phonon Green's function Polarization-specific Transmission Index. décimale : 536 Chaleur. Thermodynamique Résumé : In this work, the atomistic Green's function method is extended to compute transmission functions for each phonon polarization. The eigenvectors and eigenvalues of the overall density of states matrices are manipulated to yield a density of states matrix for each polarization. A decomposed self-energy is calculated from the density of states matrix for each polarization and used to calculate the transmission function for a particular phonon branch. In a pure bulk material such as silicon, each transmission function exhibits a frequency-independent value of unity. In heterogeneous bulk materials, the transmission function is reduced significantly due to the junction of dissimilar materials. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000133000011 [...]

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