Properties of the Phonon Gas in Ultrathin Membranes at Low Temperature
- 5 October 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 81 (14) , 2958-2961
- https://doi.org/10.1103/physrevlett.81.2958
Abstract
We analyze heat conduction by phonons in ultrathin membranes by constructing a new theoretical framework which implies a crossover from a bulk three-dimensional phonon distribution into a quasi-two-dimensional distribution when the temperature is lowered. We calculate the corresponding changes in the relevant thermodynamic quantities. At the end we make a comparison to experimental data.Keywords
This publication has 5 references indexed in Scilit:
- Measurements of thermal transport in low stress silicon nitride filmsApplied Physics Letters, 1998
- Thermal characteristics of silicon nitride membranes at sub-Kelvin temperaturesApplied Physics Letters, 1998
- Microrefrigeration by normal-metal/insulator/superconductor tunnel junctionsApplied Superconductivity, 1997
- Hot-electron microcalorimeters as high-resolution x-ray detectorsApplied Physics Letters, 1995
- Phonon radiative heat transfer and surface scatteringPhysical Review B, 1988