Open AccessManipulating Abrikosov vortices with soft magnetic stripes
Author(s) -
Vitalii Vlasko-Vlasov,
F. Colauto,
Alexandre I. Buzdin,
Daniel Rosenmann,
Timothy Benseman,
W. K. Kwok
Publication year - 2017
Publication title -
physical review. b./physical review. b
Language(s) - English
Resource type - Journals
eISSN - 2469-9969
pISSN - 2469-9950
DOI - 10.1103/physrevb.95.174514
Subject(s) - vortex , condensed matter physics , superconductivity , magnetic flux , physics , vorticity , magnetic field , enhanced data rates for gsm evolution , mechanics , quantum mechanics , telecommunications , computer science
International audienceTuning the polarization of a periodic array of magnetic stripes on top of a superconducting film allows control of Abrikosov vortex motion. Using direct magneto-optical imaging of the vortex patterns, we demonstrate that the proximity of the magnetic stripe ends to the edges of the superconducting film can strongly alter the vortex dynamics. We observe qualitatively different vortex behavior when the stripes overlap with the film edges. From the resulting unique magnetic flux patterns, we calculate the magnetic pinning strength of our stripe array and study effects of the modified edge barrier on vortex guidance and gating that result from different polarizations of the stripes