Orientation-dependent current-induced motion of skyrmions with various topologies

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We study the current-driven motion of metastable localized spin structures with various topological charges in a (Pt0.95Ir0.05)/Fe bilayer on a Pd(111) surface by combining atomistic spin model simulations with an approach based on the generalized Thiele equation. We demonstrate that besides a distinct dependence on the topological charge itself the dynamic response of skyrmionic structures with topological charges Q=−1 and Q=3 to a spin-polarized current exhibits an orientation dependence. We further show that such an orientation dependence can be induced by applying an in-plane external field, possibly opening up a different pathway to the manipulation of skyrmion dynamics.

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ISO 690WEISSENHOFER, Markus, Ulrich NOWAK, 2019. Orientation-dependent current-induced motion of skyrmions with various topologies. In: Physical Review B. 2019, 99(22), 224430. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.99.224430
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@article{Weienhofer2019Orien-46429,
  year={2019},
  doi={10.1103/PhysRevB.99.224430},
  title={Orientation-dependent current-induced motion of skyrmions with various topologies},
  number={22},
  volume={99},
  issn={2469-9950},
  journal={Physical Review B},
  author={Weißenhofer, Markus and Nowak, Ulrich},
  note={Article Number: 224430}
}
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