Abstract
We report the temperature dependent cross-plane thermal conductivities of Ge quantum dot superlattices measured by the 3ω method. A large reduction in the thermal conductivity of the superlattices compared with that of bulk materials is observed. A simple model taking into account the relaxation time approximation, including phonon scattering on quantum dots, well explains the experimental data.
- Received 9 December 2002
DOI:https://doi.org/10.1103/PhysRevB.67.165333
©2003 American Physical Society