Neutron-scattering study of spin correlations in electron-doped Pr 0.89LaCe0.11CuO4 single crystals

M. Fujita, S. Kuroshima, M. Matsuda, K. Yamada

Research output: Contribution to journalConference articlepeer-review

11 Citations (Scopus)

Abstract

We have performed neutron-scattering measurements on the single crystals of electron-doped cuprate, Pr0.89LaCe0.11CuO 4-δ in order to study the relationship between spin correlations and the superconductivity. In the non-superconducting as-grown x = 0.11 sample, clear magnetic Bragg peak appears below 200 K, while no evidence of antiferromagnetic order was found in the oxygen-reduced superconducting one (Tc = 25.5 K). These results imply that superconductivity concomitantly appears with the degradation of a magnetic ordering by oxygen-reduced procedure. Furthermore, we observed clear commensurate low-energy spin fluctuations, at the antiferromagnetic zone center in both as-grown and reduced samples, analogous to the result for Nd 1.85Ce0.15CuO4. Therefore, commensurate spin fluctuations are robust against the electron-doping and is commonly exist in the electron-doped superconductors.

Original languageEnglish
Pages (from-to)130-134
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume392-396
Issue numberPART 1
DOIs
Publication statusPublished - 2003 Oct 1
Externally publishedYes
EventProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
Duration: 2002 Nov 112002 Nov 13

Keywords

  • Electron-doped superconductor
  • Neutron scattering
  • Spin fluctuations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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