Article

Science in China Series G: Physics, Mechanics and Astronomy

, Volume 51, Issue 6, pp 719-722

First online:

Superconductivity at 36 K in gadolinium-arsenide oxides GdO1−x F x FeAs

  • Peng ChengAffiliated withNational Laboratory for Superconductivity, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
  • , Lei FangAffiliated withNational Laboratory for Superconductivity, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
  • , Huan YangAffiliated withNational Laboratory for Superconductivity, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
  • , XiYu ZhuAffiliated withNational Laboratory for Superconductivity, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
  • , Gang MuAffiliated withNational Laboratory for Superconductivity, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
  • , HuiQian LuoAffiliated withNational Laboratory for Superconductivity, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
  • , ZhaoSheng WangAffiliated withNational Laboratory for Superconductivity, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
  • , HaiHu WenAffiliated withNational Laboratory for Superconductivity, Institute of Physics, Chinese Academy of SciencesBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences Email author 

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Abstract

In this paper we report the fabrication and superconducting properties of GdO1−x F x FeAs. It was found that when x is equal to 0.17, GdO0.83F0.17FeAs is a superconductor with the onset transition temperature T c on ≈ 36.6 K. Resistivity anomaly near 130 K was observed for all samples up to x = 0.17, and such a phenomenon is similar to that of LaO1−x F x FeAs. Hall coefficient indicates that GdO1−x F x FeAs is conducted by electron-like charge carriers.

Keywords

iron-based superconductor high-temperature superconductor