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Evidence for pair-breaking in (R sub 1 minus x Pr sub x )Ba sub 2 Cu sub 3 O sub 7 minus y (R=Er, Y, Dy, Gd, Eu) systems

Journal Article · · Applied Physics Letters; (United States)
DOI:https://doi.org/10.1063/1.106067· OSTI ID:5293683
;  [1]
  1. Institut fuer Schicht und Ionentechnik der Forschungszentrum Juelich GmbH, Postfach 1913, D-5170 Juelich (Germany)
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We observed that the superconducting critical temperature {ital T}{sub {ital c}}({ital x}) of the oxides (R{sub 1{minus}{ital x}}Pr{sub {ital x}})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{ital y}} (R=Er, Y, Dy, Gd, Eu) decreases monotonically with increasing Pr concentration {ital x}. Using the reduced parameters {ital T}{sub {ital c}}/{ital T}{sub {ital c}}(0) and {ital x}/{ital x}{sub {ital cr}} all the experimental data for five studied systems fall onto the theoretical universal curve of Abrikosov and Gor'kov over the reduced Pr concentration regime, {ital x}/{ital x}{sub {ital cr}}{lt}0.6, where {ital x}{sub {ital cr}} is the critical concentration of Pr for the complete suppression of superconductivity and {ital T}{sub {ital c}}(0) is the {ital T}{sub {ital c}} for undoped material. The consistency of these results suggests a pair-breaking mechanism which plays a role in depressing superconductivity in these high {ital T}{sub {ital c}} oxides.

OSTI ID:
5293683
Journal Information:
Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 59:17; ISSN APPLA; ISSN 0003-6951
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CONCENTRATION RATIO
COPPER COMPOUNDS
COPPER OXIDES
DYSPROSIUM COMPOUNDS
DYSPROSIUM OXIDES
ERBIUM COMPOUNDS
ERBIUM OXIDES
EUROPIUM COMPOUNDS
EUROPIUM OXIDES
GADOLINIUM COMPOUNDS
GADOLINIUM OXIDES
HIGH-TC SUPERCONDUCTORS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM ADDITIONS
PRASEODYMIUM ALLOYS
QUATERNARY COMPOUNDS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES