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Switchable magnetic dipole induced guided vortex motion
2008
Applied Physics Letters
We present evidence of magnetically controlled guided vortex motion in a hybrid superconductor/ferromagnet nanosystem consisting of an Al film on top of a square array of permalloy square rings. When the rings are magnetized with an in-plane external field H, an array of point-like dipoles with moments antiparallel to H, is formed. The resulting magnetic template generates a strongly anisotropic pinning potential landscape for vortices in the superconducting layer. Transport measurements show
doi:10.1063/1.2955824
fatcat:77sgcsbnsbbnzjesb2e67jjj4y