Lattice thermal conductivity of wires

The lattice thermal conductivity of free standing wires is calculated within a Boltzmann equation approach. Diffusive and specular phonon scattering at the wire surfaces are included by appropriate boundary conditions on the phonon distribution. The wire thermal conductivity is found to decrease mar...

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Bibliographic Details
Published in:Journal of applied physics 1999-03, Vol.85 (5), p.2579-2582
Main Authors: Walkauskas, S. G., Broido, D. A., Kempa, K., Reinecke, T. L.
Format: Article
Language:English
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Summary:The lattice thermal conductivity of free standing wires is calculated within a Boltzmann equation approach. Diffusive and specular phonon scattering at the wire surfaces are included by appropriate boundary conditions on the phonon distribution. The wire thermal conductivity is found to decrease markedly below the bulk value for narrow wires. We show that this decrease in wires is larger than that which occurs in free standing wells of comparable size.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.369576