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Controlled Vortex Formation at Nanostructured Superconductor/Ferromagnetic Junctions
Author(s) -
Niedzielski Björn,
Berakdar Jamal
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201900709
Subject(s) - vortex , condensed matter physics , superconductivity , ferromagnetism , magnetic field , materials science , nanostructure , physics , nanotechnology , mechanics , quantum mechanics
Stability and transport properties of superconducting/insulating/ferromagnetic nanostructures are decisively affected by vortex formation in the superconductor. Herein, the emergence of such vortices due to finite size and geometric effects is studied using a Landau–Ginzburg approach coupled to the magnetic layer via its stray field. Numerical simulations based on the finite‐element method evidence that magnetic vortices can be induced and coupled to each others upon appropriate nanostructuring of the magnetic films. These findings are of immediate relevance to transport properties of such structures.