Superconductivity Reinforced by Magnetic Field and the Magnetic Instability in Uranium Ferromagnets

Understand

We review our recent results on ferromagnetic superconductors, URhGe and UCoGe.

• High quality single crystals of both compounds were successfully grown.
• The specific heat shows a clear jump related to the superconducting transition in UCoGe.
• The finite values of C/T at 0K are discussed in terms of the self-induced vortex state and the value of the ordered moment.