Switchable collective pinning of flux quanta using magnetic vortex arrays

Details Switchable collective pinning of flux quanta using magnetic vortex arrays Switchable collective pinning of flux quanta using magnetic vortex arrays

2008-03-31

arxiv.org/abs/0803.4467v1

Phys. Rev. B 77, 134510 (2008)

Physics

Condensed Matter

Superconductivity

PDF file 18 pages including 5 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.77.134510

We constructed a superconducting/ferromagnetic hybrid system in which the ordering of the pinning potential landscape for flux quanta can be manipulated. Flux pinning is induced by an array of magnetic nanodots in the magnetic vortex state, and controlled by the magnetic history. This allows switching on and off the collective pinning of the flux-lattice. In addition, we observed field-induced superconductivity that originates from the annihilation of flux quanta induced by the stray fields from the magnetic vortices.

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