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Memory functions of magnetic skyrmions
Open accessAbstract
We study, by microsimulation on the chiral magnets, the elementary functions of magnetic skyrmions and the design principles of skyrmionic memory devices. The external stimuli, such as local heating, magnetic field, electric field and electric current, trigger the creation and annihilation of the skyrmion. These procedures, corresponding to the writing and erasing operations, are achieved typically within of the order of nano or pico seconds. We also examine the current driven motion of the skyrmions and find that the gyro-dynamics, which is induced by the topological nature of the skyrmion, leads to the variety of useful functions including the remarkable enhancement of the spin-transfer-torque effect. These features are shown to be advantageous for (a) high-density data-storage, (b) nonvolatile memory, and (c) ultra-low current and energy cost manipulation.
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Cites
Anisotropic Superexchange Interaction and Weak Ferromagnetism
Moriya, T. (1960) · Physical Review · doi:10.1103/physrev.120.91 · Cited by 7,234
Cited by
Tokura, Y., & Kanazawa, N. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00297 · Cited by 726
Self-citationPerspective: Magnetic skyrmions—Overview of recent progress in an active research field
Everschor-Sitte, K., Masell, J., Reeve, R. M., & Kläui, M. (2018) · Journal of Applied Physics · doi:10.1063/1.5048972 · Cited by 601
Magnetic bilayer-skyrmions without skyrmion Hall effect
Zhang, X., Zhou, Y., & Ezawa, M. (2016) · Nature Communications · doi:10.1038/ncomms10293 · Cited by 578
Field-free deterministic ultrafast creation of magnetic skyrmions by spin–orbit torques
Büttner, F., Lemesh, I., Schneider, M., Pfau, B., Günther, C. M., Hessing, P., Geilhufe, J., Caretta, L., Engel, D., Krüger, B., et al. (2017) · Nature Nanotechnology · doi:10.1038/nnano.2017.178 · Cited by 304
Magnetic skyrmion-based synaptic devices
Huang, Y., Kang, W., Zhang, X., Zhou, Y., & Zhao, W. (2017) · Nanotechnology · doi:10.1088/1361-6528/aa5838 · Cited by 300
Metadata
- Authors
- Koshibae, W., Kaneko, Y., Iwasaki, J., Kawasaki, M., Tokura, Y., & Nagaosa, N.
- Venue
- Japanese Journal of Applied Physics
- Publisher
- IOP Publishing
- Published
- 2015-04-02
- Volume
- 54
- Issue
- 5
- Pages
- 053001
- ISSN
- 0021-4922 (ISSN-L)
- 1347-4065
- OpenAlex
- W2069364330
- Cited by
- 168
- References
- 1
- FWCI
- 11.89
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Koshibae, W., Kaneko, Y., Iwasaki, J., Kawasaki, M., Tokura, Y., & Nagaosa, N. (2015). Memory functions of magnetic skyrmions. Japanese Journal of Applied Physics. https://doi.org/10.7567/jjap.54.053001
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