Title: Vortex ratchet induced by controlled edge roughness
Authors: Cerbu, Dorin ×
Gladilin, V. N
Cuppens, Johan
Fritzsche, J
Tempere, Jacques
Devreese, J. T
Moshchalkov, Victor
Silhanek, A. V
Van de Vondel, Joris #
Issue Date: 2013
Publisher: Institute of Physics Pub.
Series Title: New Journal of Physics vol:15
Article number: 063022
Abstract: We demonstrate theoretically and experimentally the generation of rectified mean vortex displacement resulting from a controlled difference between the surface barriers at the opposite borders of a superconducting strip. Our investigation focuses on Al superconducting strips where, in one of the two sample borders, a saw tooth-like array of micro-indentations has been imprinted. The origin of the vortex ratchet effect is based on the fact that (i) the onset of vortex motion is mainly governed by the entrance/nucleation of vortices and (ii) the current lines bunching produced by the indentations facilitates the entrance/nucleation of vortices. Only for one current direction the indentations are positioned at the side of vortex entry and the onset of the resistive regime is lowered compared to the opposite current direction. This investigation points to the relevance of ubiquitous border effects typically neglected when interpreting vortex ratchet measurements on samples with arrays of local asymmetric pinning sites.
ISSN: 1367-2630
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

Files in This Item:
File Description Status SizeFormat
NJOP_2013.pdf Published 1110KbAdobe PDFView/Open


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science