Current driven motion of magnetic topological defect in ferromagnetic superconductor

Recent years have seen a number of instances where magnetism and superconductivity intrinsically coexist. Our focus is on the case where spin-triplet superconductivity arises out of ferromagnetism, and we make a hydrodynamic analysis of the effect of charge supercurrent on magnetic topological defects like domain walls and merons. We find that while the energy dissipation is broadly similar to that of the normal state in arising solely out of Gilbert damping, other physical quantities such as the local energy flux density and the interaction between defects is qualitatively modified in the superconducting phase, by the emergent electromagnetic field that arises out of the superconducting order parameter.