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Article
Superconductivity at 5 K in alkali-metal-doped phenanthrene
Organic superconductors have π-molecular orbitals, from which electrons can become delocalized, giving rise to metallic conductivity due to orbital overlap between adjacent molecules. Here we report the discovery...
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Article
A large iron isotope effect in SmFeAsO1 - xF x and Ba1 - xK x Fe2As2
The recent discovery of superconductivity in iron-based oxypnictides with the critical transition temperature (TC) higher than 39 K has generated great excitement. Work to determine the origin of the superconduct...
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Article
A BCS-like gap in the superconductor SmFeAsO0.85F0.15
Following the discovery of superconductivity near and above 50 K in oxypnictide compounds, the hunt is on for the mechanism of this unconventional superconductivity. The first measurements of the superconducti...
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Article
Superconductivity at 43 K in SmFeAsO1-xF x
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 ...