Superconductivity, structure and resistivity in HgBa2Ca2Cu3O8+δ

Z. J. Huang, R. L. Meng, X. D. Qiu, Y. Y. Sun, J. Kulik, Y. Y. Xue, C. W. Chu

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69 引文 斯高帕斯(Scopus)

摘要

Samples of HgBa2Ca2Cu3O8+δ were successfully prepared and investigated. By examining the X-ray diffraction, transmission electron microscopy, magnetization and resistivity, we found that HgBa2Ca2Cu3O8+δ possesses an orthorhombic structure with lattice parameters a=5.451 (2)Å, b=5.432 (2)Å and c=15.826 (7) Å and a sharp superconducting transition (magnetically determined) at ∼112 K as-synthesized and as high as ∼135 K after oxygenation. The resistivity vanishes below 134 K, the highest reported for any superconductor to date. No superstructures of the types previously reported in the > 130 K samples were detected in this study. A linear T-dependent resistivity which is interpolated to zero at 0 K was also observed above ∼240 K. Below ∼240 K, deviation from such a linearity appears, which may be attributable to the fluctuation or spin-scattering effect, assuming that the behavior is intrinsic to HgBa2Ca2Cu3O8+δ.

原文English
頁(從 - 到)1-5
頁數5
期刊Physica C: Superconductivity and its applications
217
發行號1-2
DOIs
出版狀態Published - 1993 十一月 10

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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