Superconductivity at 43 K in SmFeAsO1-xF x

X. H. Chen (), T. Wu, G. Wu, R. H. Liu, H. Chen and D. F. Fang
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X. H. Chen: University of Science and Technology of China, Hefei, Anhui 230026, China
T. Wu: University of Science and Technology of China, Hefei, Anhui 230026, China
G. Wu: University of Science and Technology of China, Hefei, Anhui 230026, China
R. H. Liu: University of Science and Technology of China, Hefei, Anhui 230026, China
H. Chen: University of Science and Technology of China, Hefei, Anhui 230026, China
D. F. Fang: University of Science and Technology of China, Hefei, Anhui 230026, China

Nature, 2008, vol. 453, issue 7196, 761-762

Abstract: High-temperature superconductors: No pressure then The recently discovered layered rare-earth metal oxypnictides have reinvigorated research into high-temperature superconductivity. The first of these, found only a few months ago, had a transition temperature of 26 K. A recent paper in Nature reported an iron–arsenic-based material superconducting at 43 K with the application of pressure. Previously only copper oxides superconductors had beaten the 40 K barrier. Now Chen et al. report bulk superconductivity in the samarium–arsenide oxide SmFeAsO1−xFx with a transition temperature of 43 K without this pressure.

Date: 2008
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DOI: 10.1038/nature07045

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