Strong coupling effects on the upper critical field of the heavy-fermion superconductor UBe{sub 13}

Journal Article · Mon Jan 01 04:00:00 EST 1996 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00755113· OSTI ID:263687

Thomas, F; Wand, B; Luehmann, T; Gegenwart, P ^[1]

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1. Technische Hochschule Darmstadt (Germany); and others

The upper critical field H{sub c2}(T) of a high quality single crystal of UBe{sub 13} is studied with very low noise resistivity measurements. It shows a large but finite slope of {minus}45 T/K, an unusual temperature dependence with an inflexion point at T/T{sub c} {approximately}0.5 and a large saturated limit for T {yields} 0 of H{sub c2}(0) = 14 T. The complete temperature dependence of H{sub c2}(T) can be described by a simple model of strong coupling superconductor, assuming a full Pauli limitation and the occurrence of a nonuniform superconducting state (FFLO state) at low temperature.

• Sponsoring Organization: USDOE
• OSTI ID: 263687
• Journal Information: Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 1-2 Vol. 102; ISSN JLTPAC; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BERYLLIUM BASE ALLOYS
CRITICAL FIELD
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
URANIUM ALLOYS