Title: Guided nucleation of superconductivity on a graded magnetic substrate
Authors: Milosevic, M. V ×
Gillijns, Werner
Silhanek, Alejandro
Libal, A
Peeters, F. M
Moshchalkov, Victor #
Issue Date: Jan-2010
Publisher: Amer inst physics
Series Title: Applied physics letters vol:96 issue:3 pages:-
Article number: 032503
Abstract: We demonstrate the controlled spatial nucleation of superconductivity in a thin film deposited on periodic arrays of ferromagnetic dots with gradually increasing diameter. The perpendicular magnetization of the dots induces vortex-antivortex molecules in the sample, with the number of (anti)vortices increasing with magnet size. The resulting gradient of antivortex density between the dots predetermines local nucleation of superconductivity in the sample as a function of the applied external field and temperature. In addition, the compensation between the applied magnetic field and the antivortices results in an unprecedented enhancement of the critical temperature.
ISSN: 0003-6951
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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