Title: Dipole-induced vortex ratchets in superconducting films with arrays of micromagnets
Authors: de Souza Silva, C. C ×
Silhanek, Alejandro
Van de Vondel, Joris
Gillijns, Werner
Metlushko, V
Ilic, B
Moshchalkov, V. V #
Issue Date: Mar-2007
Publisher: American Physical Society
Series Title: Physical Review Letters vol:98 issue:11 pages:1-4
Article number: 117005
Abstract: We investigate the transport properties of superconducting films with periodic arrays of in-plane magnetized micromagnets. Two different magnetic textures are studied: a square array of magnetic bars and a close-packed array of triangular microrings. As confirmed by magnetic force microscopy imaging, the magnetic state of both systems can be adjusted to produce arrays of almost pointlike magnetic dipoles. By carrying out transport measurements with ac drive, we observed experimentally a recently predicted ratchet effect induced by the interaction between superconducting vortices and the magnetic dipoles. Moreover, we find that these magnetic textures produce vortex-antivortex patterns, which have a crucial role in the transport properties of this hybrid system.
ISSN: 0031-9007
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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