文章基本信息

标题：Superconductivity in Ca10(Ir4As8)(Fe2As2)5 with Square-Planar Coordination of Iridium
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作者：Kazutaka Kudo ; Daisuke Mitsuoka ; Masaya Takasuga 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2013
卷号：3
期号：1
DOI：10.1038/srep03101
语种：English
出版社：Springer Nature
摘要：We report the unprecedented square-planar coordination of iridium in the iron iridium arsenide Ca₁₀(Ir₄As₈)(Fe₂As₂)₅. This material experiences superconductivity at 16 K. X-ray photoemission spectroscopy and first-principles band calculation suggest Ir(II) oxidation state, which yields electrically conductive Ir₄As₈ layers. Such metallic spacer layers are thought to enhance the interlayer coupling of Fe₂As₂, in which superconductivity emerges, thus offering a way to control the superconducting transition temperature.