Impurities in the heavy-Fermion superconductor UBe/sub 13/
Conference
·
OSTI ID:5655665
Small amounts of Sc, Lu, Gd, Np, Ce, Th, La, and Ba have been substituted for uranium in UBe/sub 13/ to observe their effects. The thorium, which was the most complete study, resulted in an extremely unusual nonmonotonic depression of the transition temperature for a nonmagnetic impurity. This comes from an interplay that exists between the lowest temperature resistivity peak and the transition temperature, as the peak is depressed. These results suggest tat heavy Fermion behavior is only a necessary condition for heavy Fermion superconductivity. All of the impurities tested resulted in a transition temperature depression.
- Research Organization:
- Los Alamos National Lab., NM (USA); Bell Labs., Murray Hill, NJ (USA); Eidgenoessische Technische Hochschule, Zurich (Switzerland)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5655665
- Report Number(s):
- LA-UR-83-3064; CONF-831187-7; ON: DE84001731
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTINIDE ALLOYS
ALLOYS
BERYLLIUM ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMETALLIC COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
THORIUM ADDITIONS
THORIUM ALLOYS
TRANSITION TEMPERATURE
URANIUM ALLOYS
URANIUM BASE ALLOYS
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTINIDE ALLOYS
ALLOYS
BERYLLIUM ALLOYS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMETALLIC COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
THORIUM ADDITIONS
THORIUM ALLOYS
TRANSITION TEMPERATURE
URANIUM ALLOYS
URANIUM BASE ALLOYS