Uniaxial-stress anisotropy of the double superconducting transition in UPt sub 3

Journal Article · Mon Mar 09 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.1597· OSTI ID:5071636

Jin, D S; Carter, S A; Ellman, B; Rosenbaum, T F ^[1]; Hinks, D G ^[2]

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1. The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637 (United States)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We study the specific heat of single-crystal UPt{sub 3} for uniaxial stress 0{le}{ital S}{le}4 kbar. For {bold S}{parallel}{bold {cflx c}}, the lower and upper superconducting transitions move towards each other in temperature and merge by {ital S}=2 kbar and {ital T}=485 mK. In the normal state, the Sommerfeld constant {gamma} increases 12% by 2 kbar and then plateaus. By contrast, for {bold S}{parallel}{bold {cflx a}}, {gamma} decreases steadily and the onset {ital T}{sub {ital c}}'s of the two superconducting transitions remain essentially unchanged, although the specific-heat peaks broaden markedly. Residual strain in the basal plane may account for some crystals of UPt{sub 3} showing only one broad superconducting transition.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5071636
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:10; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360107* -- Metals & Alloys-- Superconducting Properties-- (1992-)
ACTINIDE ALLOYS
ALLOY SYSTEMS
ALLOYS
ANISOTROPY
BINARY ALLOY SYSTEMS
CRYSTALS
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMETALLIC COMPOUNDS
MONOCRYSTALS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
PRESSURE DEPENDENCE
SPECIFIC HEAT
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
URANIUM ALLOYS