Transition from diffusive to thermal transport through metallic point contacts between the heavy-fermion superconductor UBe13 and tungsten
- Cite this article as:
- Gloos, K., Kim, J.S. & Stewart, G.R. J Low Temp Phys (1996) 102: 325. doi:10.1007/BF00754665
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Metallic point contacts between the heavy-fermion superconductor UBe13 and the normal metal tungsten reveal superconducting anomalies due to diffusive and thermal transport as described by Maxwell's resistance. Significant Andreev reflection-derived hole currents are missing. The strongly enhanced residual contact resistances can be explained by both a badly conducting normal interface layer on the UBe13 side and ordinary reflection caused by the extremely different electronic properties on both sides of the interface.