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| Chinese Physics Letters 2008 25 (6): 2215-2216 ISSN: 0256-307X CN: 11-1959/O.4 |
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· REN Zhi-An,LU Wei,YANG Jie,YI Wei,SHEN Xiao-Li,LI Zheng-Cai,CHE Guang-Can,DONG Xiao-Li,SUN Li-Ling,ZHOU Fang,ZHAO Zhong-Xian
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| Superconductivity at 55K in Iron-Based F-Doped Layered Quaternary Compound Sm[O1-xFx]FeAs |
| REN Zhi-An, LU Wei, YANG Jie, YI Wei, SHEN Xiao-Li, LI Zheng-Cai, CHE Guang-Can, DONG Xiao-Li, SUN Li-Ling, ZHOU Fang, ZHAO Zhong-Xian |
National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100190
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Received
2008-4-24
Online
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Abstract We report the superconductivity in iron-based oxyarsenide Sm[O1-xFx]FeAs, with the onset resistivity transition temperature at 55.0K and Meissner transition at 54.6K. This compound has the same crystal structure as LaOFeAs with shrunk crystal lattices, and becomes the superconductor with the highest critical temperature among all materials besides copper oxides up to now.
PACS
74.10.+v
74.70.-b
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