Phonon transmission across an interface between two crystals
https://doi.org/10.17586/2220-8054-2016-7-6-971-982
Abstract
A new model of phonon transmission across interface between two crystals is proposed which takes into account the mismatch of crystal lattices. It has been found that the mismatch of lattices results in phonon scattering at the interface even in the absence of defects. As it has been shown, at the normal incidence, longitudinally polarized phonons have much larger transmission coefficient than that of transversely polarized phonons, excluding special resonance cases. Allowance for this factor results in a calculated Kapitza resistance value that is approximately three times greater. For the quasi one-dimensional case, an exact solution has been obtained.
Supporting agencies: The author thanks E. D. Eidelman and G. V. Budkin for helpful critical comments, and A. Ya. Vul for attention to this study. The work was supported by the Russian Foundation for Basic Research (Project No. 16-03-01084 A).
About the Author
A. P. Meilakhs
Ioffe Physical Technical Institute
Russian Federation
Russian Federation
St. Petersburg
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Review
For citations:
Meilakhs A.P. Phonon transmission across an interface between two crystals. Nanosystems: Physics, Chemistry, Mathematics. 2016;7(6):971-982. https://doi.org/10.17586/2220-8054-2016-7-6-971-982
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