Minimum Thermal Conductivity of Superlattices

Abstract

The phonon thermal conductivity of a multilayer is calculated for transport perpendicular to the layers. There is a cross over between particle transport for thick layers to wave transport for thin layers. The calculations shows that the conductivity has a minimum value for a layer thickness somewhat smaller then the mean free path of the phonons.

new results added, to appear in PRL

Cited by in corpus (54)

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