A large international collaboration has identified a new iron-based compound that demonstrates superconductivity on one-dimensional ladders of iron atoms. Until recently, superconductivity in iron-based compounds had only been observed in iron pnictides on two-dimensional square lattices.
In a paper published today in the prestigious journal Nature Materials, Hiroki Takahashi from Nihon University and co-authors from Japan, China and Australia, including ANSTO's Instrument Scientist and adjunct A/Prof of University of Sydney Max Avdeev, revealed that barium iron sulphide (BaFe2S3) exhibits superconductivity under pressure (11 GPa) at a temperature below 14 degrees K. Other collaborators on the paper included researchers from the Tohoku University, University of Tokyo, National Institute for Materials Science, and Toyota Physical and Chemical Research Institute (Japan) and Jilin University (China).
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