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APS » Journals » Phys. Rev. Lett. » Volume 84 » Issue 5
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Phys. Rev. Lett. 84, 927–930 (2000)

Minimum Thermal Conductivity of Superlattices

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M. V. Simkin and G. D. Mahan
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200
and Solid State Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831

Received 23 July 1999; published in the issue dated 31 January 2000

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

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.927
DOI:
10.1103/PhysRevLett.84.927
PACS:
66.70.+f, 68.65.+g
 
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