Umklapp Processes and the Low-Temperature (°K) Electrical Resistivity of Aluminum
- 15 December 1970
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 2 (12) , 4805-4806
- https://doi.org/10.1103/physrevb.2.4805
Abstract
Recently, a sharp steplike temperature dependence in the electrical resistivity of aluminum in the vicinity of 4°K has been observed and ascribed to the exponential onset of electron-phonon umklapp scattering. There are, however, theoretical arguments that umklapp processes in aluminum in this temperature region do not account for a sharp temperature dependence of the kind observed. Accurate resistivity measurements (0.02% relative accuracy) are presented in support of these arguments.Keywords
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