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Title: Local visualization of asymmetric flux pinning by magnetic dots with perpendicular magnetization
Authors: Van Bael, Margriet ×
Lange, Martin
Raedts, Sophie
Moshchalkov, Victor
Grigorenko, AN
Bending, SJ #
Issue Date: Jul-2003
Publisher: Published by the American Physical Society through the American Institute of Physics
Series Title: Physical Review B, Condensed Matter and Materials Physics vol:68 issue:1 pages:1-4
Article number: 014509
Abstract: Field polarity-dependent flux pinning is investigated in a superconducting Pb film on an array of Co/Pt dots with out-of-plane magnetization. With the magnetic moments m of all dots aligned, the pinning force strongly depends on the mutual orientation of m and the magnetic field H. By scanning Hall probe microscopy, we have revealed the origin of this field polarity-dependent pinning. For antiparallel m and H, vortices are loosely "caged" at interstitial positions, while for parallel m and H, vortices are strongly pinned on the dots, thus providing a strong pinning asymmetry.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
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× corresponding author
# (joint) last author

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