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Magnetism and superconductivity in doped La sub 2 CuO sub 4

Journal Article · · Physical Review, B: Condensed Matter; (USA)
; ; ; ;  [1]
  1. Department of Physics, Faculty of Science, Hokkaido University, Sapporo, 060, Japan (JP)
The temperature ({ital T}) dependence of magnetic susceptibility ({chi}) in (La{sub 1{minus}{ital x}M}{sub {ital x}}){sub 2}CuO{sub 4} ({ital M}=Sr,Ba) is examined for {ital T}{lt}580 K. A broad peak ({chi}{sub max}) in the {chi}-{ital T} curve, already reported for a Sr-doped system, is also observed in a Ba-doped one. The temperature exhibiting {chi}{sub max} decreases with a linear dependence on {ital x} and tends rapidly to zero at around {ital x}={ital x}{sub {ital c}} ({ital x}{sub {ital c}}{congruent}0.12 for {ital M}=Sr and {similar to}0.1 for {ital M}=Ba). For {ital x}{approx gt}{ital x}{sub {ital c}}, the {chi} monotonically increases with lowering {ital T} over the entire {ital T} range examined. In both systems, the superconductivity is found to be remarkably suppressed above {ital x}{sub {ital c}}.
OSTI ID:
7007661
Journal Information:
Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:4; ISSN 0163-1829; ISSN PRBMD
Country of Publication:
United States
Language:
English

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