Abstract
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.
Original language | English |
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Article number | 3101 |
Journal | Scientific reports |
Volume | 3 |
DOIs | |
Publication status | Published - 2013 Oct 31 |
Externally published | Yes |
ASJC Scopus subject areas
- General