Maximizing phonon thermal conductance for ballistic membranes
Mesoscale and Nanoscale Physics
2008-11-10 v1 Materials Science
Abstract
At low temperatures, phonon scattering can become so weak that phonon transport becomes ballistic. We calculate the ballistic phonon conductance G for membranes using elasticity theory, considering the transition from three to two dimensions. We discuss the temperature and thickness dependence and especially concentrate on the issue of material parameters. For all membrane thicknesses, the best conductors have, counter-intuitively, the lowest speed of sound.
Keywords
Cite
@article{arxiv.0710.1195,
title = {Maximizing phonon thermal conductance for ballistic membranes},
author = {T. Kühn and I. J. Maasilta},
journal= {arXiv preprint arXiv:0710.1195},
year = {2008}
}
Comments
4 pages, 4 figures, proceedings to phonons 2007 conference