期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 21, 期 14, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/21/14/142203
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We synthesized the samples Sr1-xSmxFFeAs with a ZrCuSiAs-type structure. These samples were characterized by resistivity and susceptibility. It is found that substitution of rare earth metal for alkaline earth metal in this system suppresses the anomaly in resistivity and induces superconductivity. Superconductivity at 56 K in nominal composition Sr0.5Sm0.5FFeAs is realized, indicating that the superconducting transition temperatures in the iron arsenide fluorides can reach as high as that in oxypnictides with the same structure.
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