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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2003 Apr 30|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics