Multiscale simulations of topological transformations in magnetic-skyrmion spin structures
De Lucia A, Litzius K, Krueger B, Tretiakov OA, Klaeui M (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 96
Article Number: 020405
Journal Issue: 2
DOI: 10.1103/PhysRevB.96.020405
Abstract
Magnetic skyrmions belong to the most interesting spin structures for the development of future information technology as they have been predicted to be topologically protected. To quantify their stability, we use an innovative multiscale approach to simulating spin dynamics based on the Landau-Lifshitz-Gilbert equation. The multiscale approach overcomes the micromagnetic limitations that have hindered realistic studies using conventional techniques. We first demonstrate how the stability of a skyrmion is influenced by the refinement of the computational mesh and reveal that conventionally employed traditional micromagnetic simulations are inadequate for this task. Furthermore, we determine the stability quantitatively using our multiscale approach. As a key operation for devices, the process of annihilating a skyrmion by exciting it with a spin polarized current pulse is analyzed, showing that skyrmions can be reliably deleted by designing the pulse shape.
Involved external institutions
Germany (DE)
Japan (JP)How to cite
APA:
De Lucia, A., Litzius, K., Krueger, B., Tretiakov, O.A., & Klaeui, M. (2017). Multiscale simulations of topological transformations in magnetic-skyrmion spin structures. Physical Review B, 96(2). https://doi.org/10.1103/PhysRevB.96.020405
MLA:
De Lucia, Andrea, et al. "Multiscale simulations of topological transformations in magnetic-skyrmion spin structures." Physical Review B 96.2 (2017).
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