On the possibility of a long range proximity effect in a ferromagnetic nanoparticle

Abstract

We study the proximity effect in a ferromagnetic nanoparticle having a vortex magnetization pattern. We show that for axisymmetric system consisting of a circular particle and a magnetic vortex situated at the center of it no long range superconducting correlations are induced. It means that induced superconductivity is localized in the small area near the superconducting electrode. However, in the real systems axial symmetry can be broken by either a shift of the magnetic vortex from the origin or geometrical anisotropy of the ferromagnetic particle. In this case a long range proximity effect is possible.

References in corpus (6)

• Long range triplet Josephson effect through a ferromagnetic trilayer
• Fully developed triplet proximity effect
• Triplet proximity effect in FSF trilayers
• Josephson effect due to the long-range odd-frequency triplet superconductivity in SFS junctions with Neel domain walls
• Odd triplet superconductivity in a superconductor/ferromagnet structure with a spiral magnetic structure
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Cited by in corpus (9)

• Spin-polarized supercurrents for spintronics: a review of current progress
• Half-Metallic Superconducting Triplet Spin MultiValves
• Triplet superconductivity in a ferromagnetic vortex
• Robustness of Spin-Triplet Pairing and Singlet-Triplet Pairing Crossover in Superconductor/Ferromagnet Hybrids
• Controlling supercurrents and their spatial distribution in ferromagnets
• Superconducting triplet rim currents in a spin-textured ferromagnetic disk
• Crossover between short and long range proximity effects in SFS junctions with Ni-based ferromagnets
• Effective spin-flip scattering in diffusive superconducting proximity systems with magnetic disorder
• The unusual distribution of spin-triplet supercurrents in disk-shaped Josephson junctions