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Theory and Calculation of the Thermal Conductivity of Amorphous Si

Published online by Cambridge University Press:  28 February 2011

Joseph L. Feldman  and
Philip B. Allen
Joseph L. Feldman
Affiliation:
Complex Systems Theory Branch, Naval Research Laboratory, Code 4690, Washington D.C. 20375-5000
Philip B. Allen
Affiliation:
Department of Physics, State University of New York, Stony Brook, NY 11794-3800
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Abstract

Vibrations of amorphous Si are represented by three available 216 atom models and the forces of Stillinger and Weber. It is shown how the Kubo formula for thermal conductivity can be evaluated “exactly” assuming harmonic vibrations, making only finite system-size errors. The results are rather insensitive to the particular model for the coordinates of the atoms and support a “shunt resistor model” for the thermal conductivity which fits data for glasses very well.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 141: Symposium T – Atomic Scale Calculations in Materials Science , 1988 , 219
Copyright
Copyright © Materials Research Society 1989

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References

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