Abstract
In-plane ferromagnetic bars, densely packed in a linear array underneath a superconductingbridge, create two types of vortex chains of opposite polarity inside the superconductor. Inthis work we investigate both experimentally and theoretically the dynamics of these vortexchains as a function of an external magnetic field for two different arrangements ofmagnetic moments, namely parallel and antiparallel. The theoretical approach,based on the time-dependent Ginzburg–Landau formalism, confirms previouslyproposed empirical models implemented to describe the basic properties of thesehybrid systems. In addition, local transport measurements allow us to probe thedynamics of individual vortex channels as a function of the applied magneticfield. These measurements evidence a drastic reduction of the dissipation in thechannel populated with vortices having opposite polarity to the applied field.
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