Homogeneous Phase of Coexistence of Spin-Triplet Superconductivity and Ferromagnetism

The coexistence of a homogeneous (Meissner-like) phase of spin-triplet superconductivity and ferromagnetism is investigated within the framework of a phenomenological model of spin-triplet ferromagnetic superconductors. The results are discussed in view of application to metallic ferromagnets as UGe${}_2$, ZrZn${}_2$, URhGe, and Fe.