Abstract
Measurements of the Kapitza conductance by the ac technique are reported for oriented gallium and copper single crystal discs. The data show convincing evidence that conduction electrons participate in the transmission of heat across the metal-He II interfaces for both metals. Measurements of the Kapitza conductance as a function of transverse and longitudinal fields and the influence of temperature, sample thickness and impurities allow a qualitative understanding of the total heat transfer across the sample.
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We are thankful to P. Martin for determining RRR
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Work supported by the National Science Foundation, Grant No. GH 40901.
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Wagner, F., Yaqub, M. Electronic contribution to the heat transfer across metal single crystal-He II boundaries. Phys cond Matter 19, 337–347 (1975). https://doi.org/10.1007/BF01458882
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DOI: https://doi.org/10.1007/BF01458882