Title: Current crowding effects in superconducting corner-shaped Al microstrips
Authors: Adami, O. -A ×
Cerbu, Dorin
Cabosart, D
Motta, M
Cuppens, Johan
Ortiz, W. A
Moshchalkov, Victor
Hackens, B
Delamare, R
Van de Vondel, Joris
Silhanek, A. V #
Issue Date: 2013
Publisher: American Institute of Physics
Series Title: Applied Physics Letters vol:102 issue:5
Article number: 052603
Abstract: The superconducting critical current of corner-shaped Al superconducting microstrips has been investigated. We demonstrate that the sharp turns lead to asymmetric vortex dynamics, allowing for easier penetration from the inner concave angle than from the outer convex angle. This effect is evidenced by a rectification of the voltage signal otherwise absent in straight superconducting
strips. At low magnetic fields, an enhancement of the critical current with increasing magnetic field
is observed for a particular combination of field and current polarity, confirming a theoretically
predicted competing interplay of superconducting screening currents and applied currents at the
inner side of the turn.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physics and Astronomy - miscellaneous
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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