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Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2As2

AmandaPisces 添加于 2013/3/25 13:20:16  1083次阅读 | 0次推荐 | 0个评论

Co-doping of lanthanum and phosphorus in CaFe2As2 induces superconductivity at 45 K. This superconducting transition temperature is higher than the 38 K transition in Ba1−xKxFe2As2, which is the maximum found thus far among the 122 phases. Superconductivity with a substantial shielding volume fraction was observed at 0.12 ≤ x ≤ 0.18 and y = 0.06 in Ca1−xLaxFe2(As1−yPy)2. The superconducting phase of the present system seems to be not adjacent to an antiferromagnetic phase.

作 者:Kazutaka Kudo; Keita Iba; Masaya Takasuga; Yutaka Kitahama; Jun-ichi Matsumura; Masataka Danura; Yoshio Nogami; Minoru Nohara
期刊名称: Scientific Reports
期卷页: 2013-03-18 第3卷 第期 ~页
学科领域:工程材料 » 无机非金属材料 » 人工晶体
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原文链接:http://www.nature.com/srep/2013/130318/srep01478/full/srep01478.html
DOI: doi:10.1038/srep01478
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