Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2As2
| Autor: | Kudo, Kazutaka, Iba, Keita, Takasuga, Masaya, Kitahama, Yutaka, Matsumura, Jun-ichi, Danura, Masataka, Nogami, Yoshio, Nohara, Minoru |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Scientific Reports 3 (2013) 1478 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/srep01478 |
| Popis: | 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 $\leq$ x $\leq$ 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. Comment: 13 pages, 4 figures |
| Databáze: | arXiv |
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