Superconductivity in Ca(10)(Ir(4)As(8))(Fe(2)As(2))(5) with Square-Planar Coordination of Iridium

We report the unprecedented square-planar coordination of iridium in the iron iridium arsenide Ca(10)(Ir(4)As(8))(Fe(2)As(2))(5). This material experiences superconductivity at 16 K. X-ray photoemission spectroscopy and first-principles band calculation suggest Ir(II) oxidation state, which yields e...

Descripción completa

Detalles Bibliográficos
Autores principales: Kudo, Kazutaka, Mitsuoka, Daisuke, Takasuga, Masaya, Sugiyama, Yuki, Sugawara, Kento, Katayama, Naoyuki, Sawa, Hiroshi, Kubo, Hiroaki S., Takamori, Kenta, Ichioka, Masanori, Fujii, Tatsuo, Mizokawa, Takashi, Nohara, Minoru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3813930/
https://www.ncbi.nlm.nih.gov/pubmed/24173038
http://dx.doi.org/10.1038/srep03101
Descripción
Sumario:We report the unprecedented square-planar coordination of iridium in the iron iridium arsenide Ca(10)(Ir(4)As(8))(Fe(2)As(2))(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 Ir(4)As(8) layers. Such metallic spacer layers are thought to enhance the interlayer coupling of Fe(2)As(2), in which superconductivity emerges, thus offering a way to control the superconducting transition temperature.

Ejemplares similares