Interaction between propagating spin waves and domain walls on a ferromagnetic nanowire
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Physical Review B. 2012, 85(17). ISSN 1098-0121. Available under: doi: 10.1103/PhysRevB.85.174428
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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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KIM, 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.85.174428BibTex
@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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<dcterms:abstract xml:lang="eng">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.</dcterms:abstract>
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