2000/04/30 by M. V. Simkin, G. D. Mahan
Physics and Astronomy · #cond-mat.mtrl-sci
published as Thermoelectric Materials 2000 (MRS Proceedings Volume 626) · Talk given at MRS meeting, San Francisco, CA, 24-28 April, 2000
arxiv created 2000/04/30 · arxiv updated 2009/11/30
The mean free path of phonons in superlattices is estimated. It is shown to be strongly dependent on the superlattice period due to the Umklapp scattering in subbands. It first falls with increasing the superlattice period until it becomes comparable with the latter after what it rises back to the bulk value. Similar behavior is expected of heat conductivity, which is proportional to the mean free path.