Title: Guided vortex motion in superconductors with a square antidot array
Authors: Silhanek, Alejandro ×
Van Look, Lieve
Raedts, Sophie
Jonckheere, Rik
Moshchalkov, Victor #
Issue Date: Dec-2003
Publisher: American physical soc
Series Title: Physical Review B vol:68 issue:21 pages:1-6
Article number: 214504
Abstract: We have measured the in-plane anisotropy of the vortex mobility in a thin Pb film with a square array of antidots. The Lorentz force, acting on the vortices, was rotated by adding two perpendicular currents and keeping the amplitude of the net current constant. One set of voltage probes was used to detect the vortex motion. We show that the pinning landscape provided by the square antidot lattice influences the vortex motion in two different ways. First, the modulus of the vortex velocity becomes angular dependent with a lower mobility along the diagonals of the pinning array. Second, the vortex displacement is preferentially parallel to the principal axes of the underlying pinning lattice, giving rise to a misalignment between the vortex velocity and the applied Lorentz force. We show that this anisotropic vortex motion is temperature dependent and progressively fades out when approaching the normal state.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Tutorial services, Faculty of Science
× corresponding author
# (joint) last author

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