Cu-site doping effects, transport and magnetic properties of high-Tc oxides and their hole concentration dependence

H. Harashina, T. Nishikawa, T. Kiyokura, S. Shamoto, M. Sato, K. Kakurai

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54 引文 斯高帕斯(Scopus)

摘要

Doping effects have been studied by using La2-ySryCu1-χMχO4 (M = Zn, Ni and Mg) and YBa2(Cu1-χZnχ)3O6+y. The rate of Tc-suppression, |dTc/dχ|, is found to be inversely proportional to the carrier concentration p. The disappearance of the superconductivity with Cu-site doping seems to be primarily due to the loss of the itinerant nature of the holes, which is supported by the variation of the spectral function χ(ω) of the magnetic excitations with temperature, studied by neutron scattering on YBa2(Cu0.965Zn0.035)3O6.75. The peak of Hall coefficient versus T curves and the "spin gap" effect found in the T-dependence of the resistivities ρ{variant} become less significant with Zn-doping.

原文English
頁(從 - 到)142-150
頁數9
期刊Physica C: Superconductivity and its applications
212
發行號1-2
DOIs
出版狀態Published - 1993 7月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 能源工程與電力技術
  • 電氣與電子工程

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