New ferromagnetic superconductor: UCoGe

We discovered coexistence of superconductivity and ferromagnetism in the metal UCoGe. This is an extraordinary finding, because ferromagnetism and superconductivity as a rule exclude each other. The nature of the superconductivity in UCoGe must therefore be unconventional. Read our paper in Physical Review Letters:

and popular summary:

Sketch of UCoGe: Superconducting electron pairs with parallel spin (red) in a lattice of ferromagnetic spins (blue). 

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