Superconducting states in ferromagnetic metals

The symmetry of the superconducting states arising directly from the ferromagnetic states in crystals with cubic and orthorhombic symmetries is described. The symmetry nodes in the quasiparticle spectra of such states are pointed out if they exist. The superconducting phase transition in the ferromagnet is accompanied by the formation of superconducting domain structure consisting of complex conjugate states imposed on the ferromagnet domain structure with the opposite direction of the magnetization in the adjacent domains. The interplay between stimulation of a nonunitary superconducting state by the ferromagnetic moment and supression of superconductivity by the diamagnetic orbital currents is established.