Numéro
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
Page(s) C6-256 - C6-258
DOI https://doi.org/10.1051/jphyscol:1981674
International Conference on Phonon Physics

J. Phys. Colloques 42 (1981) C6-256-C6-258

DOI: 10.1051/jphyscol:1981674

CONTRIBUTION OF LOW-FREQUENCY LONGITUDINAL PHONONS TO THE LATTICE THERMAL CONDUCTIVITY OF DIELECTRIC SOLIDS

R. Brito-Orta et P.G. Klemens

Dept. of Physics and Inst. of Material Science, Univ. of Connecticut, Storrs, CT 06268, U.S.A.


Abstract
Contributions of low-frequency longitudinal phonons to the lattice thermal conductivity are estimated using the Pomeranchuk mean free path and a cut-off given by the Akhieser theory. The temperature dependences are compared with data for rubidium halides, germanium and silicon.