Magnetoresistances and the phonon conductivity of metals

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Abstract
The thermal and electrical magnetoresistances of Cu, Ag, Au, and W were measured in the temperature range 80–130 °K. The results for the noble metals were used to establish the validity of the Modified Wiedemann–Franz Law within the experimental accuracy of ±9%. This law was then applied to the results obtained for tungsten to determine its phonon conductivity; in the temperature range investigated, the latter was approximately 0.9 W/cm °K, about 40% of the total thermal conductivity.

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