Rahm, M. and Stahl, Joachim and Wegscheider, Werner and Weiss, Dieter
Multistable switching due to magnetic vortices pinned at artificial pinning sites.
Applied Physics Letters 85 (9), pp. 1553-1555.
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Magnetic vortices form the ground state in micron and submicron ferromagnetic disks. By inserting artificial defects (antidots) into a submicron ferromagnetic disk, magnetic vortices can be pinned controllably thus enabling a different way for magnetic switching. We show that by inserting n antidots into a disk magnetization reversal takes place via n-1 jumps of the vortex core between ...
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