Dynamical pinning of a domain wall in a magnetic nanowire induced by walker breakdown

  • Tanigawa H
  • Koyama T
  • Bartkowiak M
 et al. 
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Abstract

Transmission probability of a domain wall through a magnetic nanowire is investigated as a function of the external magnetic field. A very intriguing phenomenon is found that the transmission probability shows a significant drop after exceeding the threshold driving field, which contradicts our intuition that a domain wall is more mobile in the higher magnetic field. The micromagnetics simulation reveals that the domain wall motion in the wire with finite roughness causes the dynamical pinning due to the Walker breakdown, which semiquantitatively explains our experimental results.

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Authors

  • Hironobu Tanigawa

  • Tomohiro Koyama

  • MacIej Bartkowiak

  • Shinya Kasai

  • Kensuke Kobayashi

  • Teruo Ono

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