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Superconductivity at 36 K in gadolinium-arsenide oxides GdO1-xFxFeAs

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【Author】 CHENG Peng, FANG Lei, YANG Huan, ZHU XiYu, MU Gang, LUO HuiQian, WANG ZhaoSheng & WEN HaiHu National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

【摘要】 In this paper we report the fabrication and superconducting properties of GdO1-xFxFeAs. It was found that when x is equal to 0.17, GdO0.83F0.17FeAs is a su-perconductor with the onset transition temperature Tcon ≈ 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-xFxFeAs. Hall coefficient indicates that GdO1-xFxFeAs is conducted by electron-like charge carriers.

【Abstract】 In this paper we report the fabrication and superconducting properties of GdO1-xFxFeAs. It was found that when x is equal to 0.17, GdO0.83F0.17FeAs is a su-perconductor with the onset transition temperature Tcon ≈ 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-xFxFeAs. Hall coefficient indicates that GdO1-xFxFeAs is conducted by electron-like charge carriers.

【关键词】 iron-based superconductor； high-temperature superconductor；
【Key words】 iron-based superconductor； high-temperature superconductor；
【基金】 Supported by the National Natural Science Foundation of China (Grant Nos. 10221002/A0402 and 10774170/A0402);the National Basic Re-search Program of China (973 Program) (Grant Nos. 2006CB601000, 2006CB921107 and 2006CB921802); the Chinese Academy of Sciences (ITSNEM)
  • 【文献出处】 Science in China(Series G:Physics,Mechanics & Astronomy) ,中国科学(G辑:物理学 力学 天文学)(英文版) , 编辑部邮箱 ,2008年06期
  • 【分类号】O511
  • 【被引频次】21
  • 【下载频次】30
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