Superconductivity and magnetism in (R{sub 1.5{minus}x}Pr{sub x}Ce{sub 0.5})Sr{sub 2}Cu{sub 2}NbO{sub 10{minus}{delta}} (R=Nd,Sm,Eu): Criteria for modeling the suppression of superconductivity by Pr in high-T{sub c} cuprates

Journal Article · Mon Sep 01 00:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.5144· OSTI ID:538568

Goodwin, T J ^[1]; Radousky, H B ^[2]; Shelton, R N ^[1]

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1. Department of Physics, University of California, Davis, Davis, California 95616 (United States)
2. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

We report on the electronic and magnetic phase diagram for (R{sub 1.5{minus}x}Pr{sub x}Ce{sub 0.5})Sr{sub 2}Cu{sub 2}NbO{sub 10{minus}{delta}} (R=Nd,Sm,Eu). The results indicate that Pr suppresses superconductivity in these materials in the same manner as in the (R{sub 1{minus}x}Pr{sub x})Ba{sub 2}Cu{sub 3}O{sub 7} compounds and that this suppression is correlated with anomalous Pr magnetism, a reduced Pr effective moment, a metal-to-insulator transition, and an ion size effect. The significance of these results in terms of a generalization of this phenomenon, the criteria they establish for modeling these materials, and the role of f-electron hybridization is discussed. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 538568
• Journal Information: Physical Review, B: Condensed Matter, Vol. 56, Issue 9; Other Information: PBD: Sep 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PRASEODYMIUM OXIDES
PHASE DIAGRAMS
SUPERCONDUCTIVITY
MAGNETISM
CERIUM OXIDES
STRONTIUM OXIDES
COPPER OXIDES
NIOBIUM OXIDES
EUROPIUM OXIDES
SAMARIUM OXIDES
NEODYMIUM OXIDES
ANTIFERROMAGNETIC MATERIALS
MAGNETIC MOMENTS
HIGH-TC SUPERCONDUCTORS
MATHEMATICAL MODELS