Continuously tuneable critical current in superconductor-ferromagnet multilayers

Peter Curran, Jangyong Kim, Nathan Satchell, James Witt, Gavin Burnell, Machiel Geert Flokstra, Steve Lee, Simon Bending

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We demonstrate that the critical current of superconducting Nb/Ni multilayers can be continuously tuned by up to a factor of three during magnetization reversal of the Ni films under an applied in-plane magnetic field. Our observations are in reasonably good agreement with a model of vortex pinning by Bloch domain walls that proliferate in the samples during magnetization reversal, whereby each vortex
interacts with at most one wall in any of the Ni layers. Our model suggests ways in which the controllable pinning effect could be significantly enhanced, with important potential applications in tuneable superconducting devices.
LanguageEnglish
Article number262601
Number of pages5
JournalApplied Physics Letters
Volume110
Issue number26
DOIs
StatusPublished - 27 Jun 2017

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critical current
vortices
superconducting devices
magnetization
domain wall
magnetic fields

Keywords

  • Superconductivity
  • Ferromagnetism
  • Multilayers
  • Critical Current

Cite this

Curran, P., Kim, J., Satchell, N., Witt, J., Burnell, G., Flokstra, M. G., ... Bending, S. (2017). Continuously tuneable critical current in superconductor-ferromagnet multilayers. Applied Physics Letters, 110(26), [262601]. https://doi.org/10.1063/1.4989693

Continuously tuneable critical current in superconductor-ferromagnet multilayers. / Curran, Peter; Kim, Jangyong; Satchell, Nathan; Witt, James; Burnell, Gavin; Flokstra, Machiel Geert; Lee, Steve; Bending, Simon.

In: Applied Physics Letters, Vol. 110, No. 26, 262601, 27.06.2017.

Research output: Contribution to journalArticle

Curran, P, Kim, J, Satchell, N, Witt, J, Burnell, G, Flokstra, MG, Lee, S & Bending, S 2017, 'Continuously tuneable critical current in superconductor-ferromagnet multilayers', Applied Physics Letters, vol. 110, no. 26, 262601. https://doi.org/10.1063/1.4989693
Curran P, Kim J, Satchell N, Witt J, Burnell G, Flokstra MG et al. Continuously tuneable critical current in superconductor-ferromagnet multilayers. Applied Physics Letters. 2017 Jun 27;110(26). 262601. https://doi.org/10.1063/1.4989693
Curran, Peter ; Kim, Jangyong ; Satchell, Nathan ; Witt, James ; Burnell, Gavin ; Flokstra, Machiel Geert ; Lee, Steve ; Bending, Simon. / Continuously tuneable critical current in superconductor-ferromagnet multilayers. In: Applied Physics Letters. 2017 ; Vol. 110, No. 26.
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