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:
- Superconductivity on the border of weak itinerant ferromagnetism in UCoGe,
N.T. Huy, A. Gasparini, D.E. de Nijs, Y. Huang, J.C.P. Klaasse, T. Gortenmulder, A. de Visser, A. Hamann, T. Görlach and H. v. Löhneysen,
Physical Review Letters 99 (2007) 067006.
and popular summary:
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