Dependence of Tc on hole concentration in HgBa2CuO4+δ

Q. Xiong, Y. Y. Xue, Y. Cao, F. Chen, J. Gibson, L. M. Liu, A. Jacobson, C. W. Chu

研究成果: Article同行評審

27 引文 斯高帕斯(Scopus)

摘要

HgBa2CuO4+δ (Hg1201) samples with 0.03 ≤ δ ≤ 0.4 have been obtained. The oxygen surplus δ was calculated from thermogravimetric analysis and compared with neutron powder diffraction data. The hole concentration ps has been estimated based on thermoelectric power and verified by bond-valence summation. While Tc changes with both ps and δ parabolically over most of the doping range, ps ≪ 2 δ, suggesting a complicated electric band structure of Hg1201. It was also observed that the magnetization χ of powdered samples decreases with δ in the overdoped region, suggesting a decrease of ns/m* with oxidation, as that reported in overdoped Tl2201 and Tl1201.

原文English
頁(從 - 到)216-218
頁數3
期刊Physica C: Superconductivity and its applications
251
發行號3-4
DOIs
出版狀態Published - 1995 9月 15

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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