Transition from diffusive to thermal transport through metallic point contacts between the heavy-fermion superconductor UBe{sub 13} and tungsten

Journal Article · Wed Jan 31 23:00:00 EST 1996 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00754665· OSTI ID:272745

Gloos, K ^[1]; Kim, J S; Stewart, G R ^[2]

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1. Institut fur Festkorperphysik, Darmstadt (Germany)
2. Univ. of Florida, Gainesville, FL (United States)

Metallic point contacts between the heavy-fermion superconductor UBe{sub 13} 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 UBe{sub 13} side and ordinary reflection caused by the extremely different electronic properties on both sides of the interface.

• Sponsoring Organization: USDOE
• OSTI ID: 272745
• Journal Information: Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 102; ISSN JLTPAC; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BERYLLIUM BASE ALLOYS
CHARGE TRANSPORT
ELECTRIC CONTACTS
INTERFACES
METALS
SUPERCONDUCTORS
URANIUM ALLOYS