Boundary scattering of phonons
- 14 May 1978
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 11 (9) , 1787-1794
- https://doi.org/10.1088/0022-3719/11/9/017
Abstract
The role of boundary scattering of phonons in reducing the lattice thermal conductivity is investigated in silicon, germanium and silicon-germanium alloy. The theoretical model gives a satisfactory explanation to the reduction in thermal conductivity observed in thin undoped films of silicon compared to bulk material. The magnitude of the reduction in heavily-doped hot-pressed Si-Ge alloys is somewhat less than previously reported and discrepancies still remain between theory and experimental data.Keywords
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