Chaturvedi, H.Assi, H.Dobramysl, U.Pleimling, Michel J.Täuber, Uwe C.2016-09-292016-09-292016-06http://hdl.handle.net/10919/73061We investigate the relaxation dynamics of magnetic vortex lines in type-II superconductors following rapid changes of the external driving current by means of an elastic line model simulated with Langevin molecular dynamics. A system of flux vortices in a sample with randomly distributed point-like defects is subjected to an external current of appropriate strength for a sufficient period of time so as to be in a moving non-equilibrium steady state. The current is then instantaneously lowered to a value that pertains to either the moving or pinned regime. The ensuing relaxation of the flux lines is studied via one-time observables such as their mean velocity and radius of gyration. We have in addition measured the two-time flux line height autocorrelation function to investigate dynamical scaling and aging behavior in the system, which in particular emerge after quenches into the glassy pinned state.In Copyrightcond-mat.supr-concond-mat.stat-mechArticle - Refereedhttps://doi.org/10.1088/1742-5468/2016/08/083301