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  Electrical writing, deleting, reading, and moving of magnetic skyrmioniums in a racetrack device

Göbel, B., Schäffer, A., Berakdar, J., Mertig, I., & Parkin, S. S. P. (2019). Electrical writing, deleting, reading, and moving of magnetic skyrmioniums in a racetrack device. Scientific Reports, 9: 12119. doi:10.1038/s41598-019-48617-z.

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s41598-019-48617-z.pdf (Publisher version), 2MB
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https://doi.org/10.1038/s41598-019-48617-z (Publisher version)
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 Creators:
Göbel, Börge1, Author              
Schäffer, Alexander2, Author
Berakdar, Jamal2, Author
Mertig, Ingrid1, Author
Parkin, Stuart S. P.3, Author              
Affiliations:
1Max Planck Institute of Microstructure Physics, Max Planck Society, ou_2415691              
2External Organizations, ou_persistent22              
3Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              

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 Abstract: A magnetic skyrmionium (also called 2π-skyrmion) can be understood as a skyrmion - a topologically nontrivial magnetic whirl - which is situated in the center of a second skyrmion with reversed magnetization. Here, we propose a new optoelectrical writing and deleting mechanism for skyrmioniums in thin films, as well as a reading mechanism based on the topological Hall voltage. Furthermore, we point out advantages for utilizing skyrmioniums as carriers of information in comparison to skyrmions with respect to the current-driven motion. We simulate all four constituents of an operating skyrmionium-based racetrack storage device: creation, motion, detection and deletion of bits. The existence of a skyrmionium is thereby interpreted as a ‘1’ and its absence as a ‘0’ bit.

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 Dates: 2019-08-20
 Publication Status: Published online
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 Rev. Type: -
 Identifiers: BibTex Citekey: P13798
DOI: 10.1038/s41598-019-48617-z
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Project name : Spin Orbitronics for Electronic Technologies (SORBET)
Grant ID : 670166
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 9 Sequence Number: 12119 Start / End Page: - Identifier: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322