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Configuration-induced vortex motion in type-II superconducting films with periodic magnetic dot arrays

Journal Article


Abstract


  • Using the molecular dynamic method we investigate numerically the current driven vortex motion in a superconducting film with periodic arrays of both ferromagnetic (FM) and anti-parallel ferromagnetic (AFM) dots. The simulation results show that in the absence of thermal fluctuation the vortex motion is dominated by the configurations of the magnetic dot array. This guided vortex motion is only observed at the onset of the depinning of the interstitial vortices. Two guided vortex motion mechanisms are discussed in this work. For the AFM configuration the vortex motion is mainly originated by the existence of magnetic dots with opposite magnetized moments, while for the FM case it is mainly dependent on the degree of the condensed packing of the magnetic dot lattice constant.

Authors


  •   Chen, Qinghua (external author)
  •   Shi, Dongqi
  •   Li, W (external author)
  •   Zhu, B Y. (external author)
  •   Moshchalkov, Victor V. (external author)
  •   Dou, Shi Xue

Publication Date


  • 2014

Citation


  • Chen, Q., Shi, D. Q., Li, W. X., Zhu, B. Y., Moshchalkov, V. V. & Dou, S. X. (2014). Configuration-induced vortex motion in type-II superconducting films with periodic magnetic dot arrays. Superconductor Science and Technology, 27 (6), 065004-1-065004-8.

Scopus Eid


  • 2-s2.0-84899537970

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1044

Start Page


  • 065004-1

End Page


  • 065004-8

Volume


  • 27

Issue


  • 6

Abstract


  • Using the molecular dynamic method we investigate numerically the current driven vortex motion in a superconducting film with periodic arrays of both ferromagnetic (FM) and anti-parallel ferromagnetic (AFM) dots. The simulation results show that in the absence of thermal fluctuation the vortex motion is dominated by the configurations of the magnetic dot array. This guided vortex motion is only observed at the onset of the depinning of the interstitial vortices. Two guided vortex motion mechanisms are discussed in this work. For the AFM configuration the vortex motion is mainly originated by the existence of magnetic dots with opposite magnetized moments, while for the FM case it is mainly dependent on the degree of the condensed packing of the magnetic dot lattice constant.

Authors


  •   Chen, Qinghua (external author)
  •   Shi, Dongqi
  •   Li, W (external author)
  •   Zhu, B Y. (external author)
  •   Moshchalkov, Victor V. (external author)
  •   Dou, Shi Xue

Publication Date


  • 2014

Citation


  • Chen, Q., Shi, D. Q., Li, W. X., Zhu, B. Y., Moshchalkov, V. V. & Dou, S. X. (2014). Configuration-induced vortex motion in type-II superconducting films with periodic magnetic dot arrays. Superconductor Science and Technology, 27 (6), 065004-1-065004-8.

Scopus Eid


  • 2-s2.0-84899537970

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1044

Start Page


  • 065004-1

End Page


  • 065004-8

Volume


  • 27

Issue


  • 6