Magnetic-domain-controlled vortex pinning in a superconductor/ferromagnet bilayer

Details Magnetic-domain-controlled vortex pinning in a superconductor/ferromagnet bilayer Magnetic-domain-controlled vortex pinning in a superconductor/ferromagnet bilayer

2002-05-23

arxiv.org/abs/cond-mat/0205470v1

Appl. Phys. Lett. 81 (2), 322 (2002)

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures, accepted for APL

Scientific paper

10.1063/1.1492317

Vortex pinning in a type-II superconducting Pb film covering a Co/Pt multilayer with perpendicular magnetic anisotropy is investigated. Different stable magnetic domain patterns like band and bubble domains can be created in the Co/Pt multilayer, clearly influencing the vortex pinning in the superconducting Pb layer. Most effective pinning is observed for the bubble domain state. We demonstrate that the pinning properties of the superconductor/ferromagnet bilayer can be controlled by tuning the size, density and magnetization direction of the bubbles.

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