A New Layered Iron Arsenide Superconductor: (Ca,Pr)FeAs2

A new iron-based superconductor, (Ca,Pr)FeAs2, was discovered. Plate-like crystals of the new phase were obtained, and its crystal structure was investigated by single-crystal X-ray diffraction analysis. The structure was identified as the monoclinic system with space group P21/m, composed of two Ca...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2014-01, Vol.136 (3), p.846-849
Main Authors: Yakita, Hiroyuki, Ogino, Hiraku, Okada, Tomoyuki, Yamamoto, Akiyasu, Kishio, Kohji, Tohei, Tetsuya, Ikuhara, Yuichi, Gotoh, Yoshito, Fujihisa, Hiroshi, Kataoka, Kunimitsu, Eisaki, Hiroshi, Shimoyama, Jun-ichi
Format: Article
Language:English
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Summary:A new iron-based superconductor, (Ca,Pr)FeAs2, was discovered. Plate-like crystals of the new phase were obtained, and its crystal structure was investigated by single-crystal X-ray diffraction analysis. The structure was identified as the monoclinic system with space group P21/m, composed of two Ca(Pr) planes, Fe2As2 layers, and As2 zigzag chain layers. Plate-like crystals of the new phase showed superconductivity, with a T c of ∼20 K in both magnetization and resistivity measurements.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja410845b