Domain wall tuned superconductivity in superconductor-ferromagnet bilayers

Due to the opposite natures of superconducting and ferromagnetic order parameters, hybrid bilayers systems have gained huge attention in past decades. Here we report manipulation of superconductivity by the orientation of the domain wall in such superconducting–ferromagnetic bilayers based on the phase-field model. The phase of the primary order parameter in the Ginzburg–Landau model was used to describe the vortex dynamics path in the superconductor. Vortices were observed to follow the available path within domain centers perpendicular to the applied current, under the Lorentz force. Applied current was observed to follow the spatial path described by the ferromagnetic domain walls in the superconductors, where in the absence of such clear paths current was observed to form leakage channels from within the domain centers. Carrier concentration, supercurrent density, and energy components in the superconductor were observed to strongly depend on the orientation of the domain wall in current-carrying superconductors. The variation in carrier concentration, which defines the resistivity of the superconductor, was observed to depend strongly on the orientation of the domain wall with respect to the direction of applied current and was observed to have about 30% variation for 0° to 56° (and 124°–180°) domain wall orientations. This huge variation in carrier concentration and other parameters controlled by domain wall orientation have potential applications in sensors, controls and communication.



Work Title Domain wall tuned superconductivity in superconductor-ferromagnet bilayers
Open Access
  1. Hasnain Mehdi Jafri
  2. Houbing Huang
  3. Chao Yang
  4. Junsheng Wang
  5. A. A. Amirov
  6. Long-Qing Chen
  7. Ce-Wen Nan
  1. Superconductor–ferromagnet bilayer
  2. Anisotropic resistivity
  3. Superconductivity tuning
  4. Domain wall
License In Copyright (Rights Reserved)
Work Type Article
  1. Journal of Physics D: Applied Physics
Publication Date June 26, 2020
Publisher Identifier (DOI)
Deposited August 10, 2022




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Version 1

  • Created
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  • Added Creator Sandra Elder
  • Added Domain wall tuned superconductivity in superconductor–ferromagnet bilayers.pdf
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    • Superconductor–ferromagnet bilayer, Anisotropic resistivity, Superconductivity tuning, Domain wall
    • Journal of Physics D: Applied Physics
    Publisher Identifier (DOI)
  • Deleted Creator Sandra Elder
  • Added Creator Hasnain Mehdi Jafri
  • Added Creator Houbing Huang
  • Added Creator Chao Yang
  • Added Creator Junsheng Wang
  • Added Creator A. A. Amirov
  • Added Creator Long-Qing Chen
  • Added Creator Ce-Wen Nan