Journal
JOURNAL OF APPLIED PHYSICS
Volume 110, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3622300
Keywords
-
Categories
Funding
- Defense Advanced Research Projects Agency
- SPA-WAR Systems Center [N66001-09-C-2013]
Ask authors/readers for more resources
Using the linearized Boltzmann transport equation and perturbation theory, we analyze the reduction in the intrinsic thermal conductivity of few-layer graphene sheets accounting for all possible three-phonon scattering events. Even with weak coupling between layers, a significant reduction in the thermal conductivity of the out-of-plane acoustic modes is apparent. The main effect of this weak coupling is to open many new three-phonon scattering channels that are otherwise absent in graphene. However, reflection symmetry is only weakly broken with the addition of multiple layers, and out-of-plane acoustic phonons still dominate thermal conductivity. We also find that reduction in thermal conductivity is mainly caused by lower contributions of the higher-order overtones of the fundamental out-of-plane acoustic mode. The results compare remarkably well over the entire temperature range with measurements of graphene and graphite. (C) 2011 American Institute of Physics. [doi:10.1063/1.3622300]
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available