Vortex Matter in the Presence of Magnetic Pinning Centra |
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Authors: | M. V. Milošević F. M. Peeters |
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Affiliation: | (1) Departement Natuurkunde, Universiteit Antwerpen (UIA), B-2610 Antwerpen, Belgium |
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Abstract: | Within the non-linear Ginzburg-Landau (GL) theory, we investigate the vortex structure of a thin type II superconductor with a ferromagnetic dot on top of it. Spontaneous creation of vortex-antivortex pairs as well as specific arrangements of vortices are found. We show that the equilibrium vortex phase diagram depends on the size of the magnetic dot and its magnetization, and we discuss the shell structure of the multivortex states with magic numbers which are size and magnetization dependent. |
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