63Cu NMR study on Nd1.85Ce0.15CuO4+δ

K. Miyagawa, H. Kawamura, K. Kanoda, Y. Onose, Y. Taguchi, Y. Tokura

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The title material is known as an electron-doped high-TC superconductor, while the as-grown sample is a semiconductor. The 63Cu NMR studies for the as-grown and reduced Nd1.85Ce0.15CuO4+δ single crystals were performed. The NMR spectra of both the samples show small and continuous distribution of νQ, which has nothing to do with the appearance/disappearance of superconductivity but may be structural in origin. Both crystals exhibit single-peaked central lines with different line width showing the single phase nature and no contamination of the other phase. The NMR signal of the as-grown sample disappears around 150 K due to the magnetic ordering. On the other hand, the line width of the reduced sample is narrower than that of the as-grown sample and shows weak temperature dependence. These behaviors indicate that the antiferromagnetic short range order is depressed when the sample is reduced.

Original languageEnglish
Pages (from-to)253-254
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume388-389
DOIs
Publication statusPublished - 2003 May 1
Externally publishedYes
Eventproceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: 2002 Aug 202002 Aug 27

Keywords

  • Electron dope
  • High-T superconductor
  • NMR

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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