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We report a study on the field-driven propagation of vortex-like domain wallsin ferromagnetic nanotubes. This particular geometry gives rise to a specialfeature of the static wall configuration, which significantly influences itsdynamics. Unlike domain walls in flat strips, the left-right symmetry of domainwall propagation is broken. Furthermore, the domain wall velocity is notlimited by the Walker breakdown. Under sufficiently large magnetic fields, thedomain wall velocity reaches the velocity of spin waves (about 1000 m/s) and isthereafter connected with a direct emission of spin waves. The moving domainwall maintains its main structure but has characteristic spin-wave tailsattached. The spatial profile of this topological soliton is determined by thespin-wave dispersion.

The magnonic limit of domain wall propagation in ferromagnetic nanotubes