Electron-doping effect on magnetic order and superconductivity in Nd2-xCexCuO4 single crystals

T. Uefuji, K. Kurahashi, M. Fujita, M. Matsuda, K. Yamada

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Doping dependences of magnetic properties such as the Néel temperature, staggered moment of Cu2+ spin and antiferromagnetic coherence length in the electron-doped Nd2-xCexCuO4 have been investigated using elastic neutron scattering measurement. Near the antiferromagnetic-superconducting phase boundary for the heat-treated samples antiferromagnetism remarkably degrades upon electron-doping. The effect of heat treatment on the Néel temperature is clearly seen when x exceeds ∼0.10 where fractional superconductivity appears by the heat treatment.

Original languageEnglish
Pages (from-to)273-277
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume378-381
Issue numberPART 1
DOIs
StatePublished - Oct 1 2002
Externally publishedYes

Funding

We greatly acknowledge K. Nemoto and S. Watanabe for technical support for the experiments in JAERI. This research was in part supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology, Grant-in-Aid for Scientific Research on Priority Areas (Novel Quantum Phenomena in Transition Metal Oxides), 12046239, 2000, for Scientific Research (A), 10304026, 2000, for Encouragement of Young Scientists, 13740216, 2001 and for Creative Scientific Research (13NP0201) “Collaboratory on Electron Correlations––Toward a New Research Network between Physics and Chemistry––” and by the Japan Science and Technology Corporation, the Core Research for Evolutional Science and Technology Project (CREST).

Keywords

  • Electron-doped cuprate
  • High-T superconductivity
  • Magnetic-superconducting phase diagram
  • Neutron scattering

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