Magnetic ground state of Pr 0.89LaCe 0.11CuO 4+α-δ with varied oxygen depletion probed by muon spin relaxation

Ryosuke Kadono, Kazuki Ohishi, Akihiro Koda, Wataru Higemoto, Kenji M. Kojima, Shin Ichi Kuroshima, Masaki Fujita, Kazuyoshi Yamada

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The magnetic ground state of an electron-doped cuprate superconductor, Pr 1-xLaCe xCuO 4+α-δ (x = 0.11, α ≃ 0.04), has been studied by means of muon spin rotation/relaxation (μSR) over a wide variety of oxygen depletion, 0.03 ≤ δ ≤ 0.12. The appearance of a weak random magnetism over the entire crystal volume has been revealed by a slow exponential relaxation. The absence of δ-dependence for random magnetism and a multiplet pattern of the muon Knight shift at higher fields strongly suggest that the random moments are associated with excited Pr 3+ ions under a crystal electric field.

Original languageEnglish
Pages (from-to)2955-2958
Number of pages4
Journaljournal of the physical society of japan
Volume72
Issue number11
DOIs
Publication statusPublished - 2003 Nov
Externally publishedYes

Keywords

  • Crystal electric field
  • Cuprates
  • Superconductivity
  • μSR

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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