Interaction between propagating spin waves and domain walls on a ferromagnetic nanowire

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Kim_Interaction_Phys Rev B 174428.pdf
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2012
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Kim, June Seo
Yoon, Jin Ho
You, Chun-Yeol
Lopez-Diaz, Luis
Martinez, E.
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Physical Review B. 2012, 85(17). ISSN 1098-0121. Available under: doi: 10.1103/PhysRevB.85.174428
Zusammenfassung

We numerically investigate the interaction between propagating spin waves and a transverse domain wall in a nanowire by using micromagnetic simulations. In order to understand the mechanisms that lead to domain wall motions, we calculate domain wall velocity in a defect-free nanowire and the depinning fields for a pinned domain wall that is depinned in and against the direction of the spin-wave propagation. We find that the physical origin of the spin-wave-induced domain wall motion strongly depends on the propagating spin-wave frequency. At certain spin-wave frequencies, transverse domain wall vibrations lead to transverse wall displacements by the spin waves, while at other frequencies, large spin-wave reflection drives domain wall motion. By analyzing the depinning field calculations, the different underlying physical mechanisms are distinguished.

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ISO 690KIM, June Seo, Martin STÄRK, Mathias KLÄUI, Jin Ho YOON, Chun-Yeol YOU, Luis LOPEZ-DIAZ, E. MARTINEZ, 2012. Interaction between propagating spin waves and domain walls on a ferromagnetic nanowire. In: Physical Review B. 2012, 85(17). ISSN 1098-0121. Available under: doi: 10.1103/PhysRevB.85.174428
BibTex
@article{Kim2012Inter-19794,
  year={2012},
  doi={10.1103/PhysRevB.85.174428},
  title={Interaction between propagating spin waves and domain walls on a ferromagnetic nanowire},
  number={17},
  volume={85},
  issn={1098-0121},
  journal={Physical Review B},
  author={Kim, June Seo and Stärk, Martin and Kläui, Mathias and Yoon, Jin Ho and You, Chun-Yeol and Lopez-Diaz, Luis and Martinez, E.}
}
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