An attempt to observe phonon dimensionality crossover effects in the inelastic scattering rate of thin free-standing aluminum films
| Autor: | M. S. Isaacson, Jeevak M. Parpia, Y. K. Kwong, K. Lin |
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| Rok vydání: | 1992 |
| Předmět: |
Materials science
Condensed matter physics Magnetoresistance Phonon scattering Scattering Phonon Inelastic scattering Condensed Matter Physics Atomic and Molecular Physics and Optics Condensed Matter::Materials Science Condensed Matter::Superconductivity Scattering rate Thermal General Materials Science Thin film |
| Zdroj: | Journal of Low Temperature Physics. 88:261-272 |
| ISSN: | 1573-7357 0022-2291 |
| DOI: | 10.1007/bf00162961 |
| Popis: | We compare the inelastic scattering rate in 220-A-thick free-standing films with nearly identical films on substrates. The scattering rate was determined by fitting the magnetoresistance to theories of quantum transport. Although the films are sufficiently thin so as to modify the three-dimensional spectrum of thermal phonons, we find no significant difference between the scattering rates in free-standing and supported films. While experiments on other materials down to lower temperatures are necessary, we conclude that the cubic temperature dependence of the inelastic scattering rate in these thin aluminum films is not strongly affected by the phonon dimensionality. |
| Databáze: | OpenAIRE |
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