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Using Langevin molecular dynamics simulations we study relaxation processesof interacting skyrmion systems with and without quenched disorder. Using thetypical diffusion length as the time-dependent length characterizing therelaxation process, we find that clean systems always display dynamicalscaling, and this even in cases where the typical length is not a simple powerlaw of time. In the presence of the Magnus force, two different regimes areidentified as a function of the noise strength. The Magnus force has also amajor impact when attractive pinning sites are present, as thisvelocity-dependent force helps skyrmions to bend around defects and avoidcaging effects. With the exception of the limit of large noise, for whichdynamical scaling persists even in the presence of quenched disorder,attractive pinning sites capture a substantial fraction of skyrmions whichresults in a complex behavior of the two-time auto-correlation function that isnot reproduced by a simple aging scaling ansatz.

Skyrmion relaxation dynamics in the presence of quenched disorder