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Author Lussier, B. ♦ Ellman, B. ♦ Taillefer, L.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ PLATINUM BASE ALLOYS ♦ SUPERCONDUCTIVITY ♦ THERMAL CONDUCTIVITY ♦ URANIUM ALLOYS ♦ ANISOTROPY ♦ ENERGY GAP ♦ FERMIONS ♦ HEXAGONAL LATTICES ♦ MAGNETIC FIELDS ♦ MEAN FREE PATH ♦ MONOCRYSTALS ♦ QUASI PARTICLES ♦ TEMPERATURE DEPENDENCE ♦ TEMPERATURE RANGE 0000-0013 K ♦ TRANSITION TEMPERATURE
Abstract The thermal conductivity {kappa} of the heavy-fermion superconductor UPt{sub 3} was measured down to {ital T}{sub {ital c}}/10, along the {ital b} and {ital c} axis of a single crystal. The anisotropy ratio {kappa}{sub {ital c}}/{kappa}{sub {ital b}} as {ital T}{r_arrow}0 is shown to be a powerful new probe of the gap structure in this compound. Our observation of a nonvanishing value for this ratio establishes a property of the gap in the {ital B} phase: the presence of nodes along the {ital c} axis. Furthermore, recent calculations by Fledderjohann and Hirschfeld strongly suggest these cannot be point nodes with a linear {ital k} dependence. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-03-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 53
Issue Number 9


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