Abstract
The angular dependence of the critical current density ${J}_{c}$ in external magnetic field has been measured in Nb/CuMn multilayers with and without a regular array of antidots. The multilayers without antidots behave coherently to what has already been reported in the literature, showing, for sufficiently high anisotropy, dissipation related only to the magnetic-field component perpendicular to the layers, ${H}_{\ensuremath{\perp}}.$ This behavior is generally explained in terms of the presence of kinked vortices. The kink formation has been directly detected in the antidotted samples, where low angle modulation of ${J}_{c},$ related to single vortex kinks entering the system, has been found. The presence of kinks explains also the unusual scaling of ${J}_{c}$ vs ${H}_{\ensuremath{\perp}}$ found at low anisotropy in the antidotted case up to a value of the angle related to the geometrical structure of the system.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
