The DOI matches its Crossref record; 25 of the 25 references it cites were found in a registry or an index.
Universal current-velocity relation of skyrmion motion in chiral magnets
Open accessAbstract
Current-driven motion of the magnetic domain wall in ferromagnets is attracting intense attention because of potential applications such as racetrack memory. There, the critical current density to drive the motion is ~109–1012 A m−2. The skyrmions recently discovered in chiral magnets have much smaller critical current density of ~105–106 A m−2, but the microscopic mechanism is not yet explored. Here we present a numerical simulation of Landau–Lifshitz–Gilbert equation, which reveals a remarkably robust and universal current-velocity relation of the skyrmion motion driven by the spin-transfer-torque unaffected by either impurities or nonadiabatic effect in sharp contrast to the case of domain wall or spin helix. Simulation results are analysed using a theory based on Thiele’s equation, and it is concluded that this behaviour is due to the Magnus force and flexible shape-deformation of individual skyrmions and skyrmion crystal, which enable them to avoid pinning centres. Current-induced motion of skyrmions is attracting attention due to its low critical current density, however, its microscopic mechanisms have not been elucidated yet. Using numerical simulations, the authors demonstrate a universal current-velocity relation of skyrmion motion, independent of disorder or nonadiabatic effects.
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Cites
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Cited by
Tokura, Y., & Kanazawa, N. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00297 · Cited by 726
Perspective: 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
Wang, Y., Wang, L., Xia, J., Lai, Z., Tian, G., Zhang, X., Hou, Z., Gao, X., Mi, W., Feng, C., et al. (2020) · Nature Communications · doi:10.1038/s41467-020-17354-7 · Cited by 303
Control and manipulation of a magnetic skyrmionium in nanostructures
Zhang, X., Xia, J., Zhou, Y., Wang, D., Liu, X., Zhao, W., & Ezawa, M. (2016) · Physical Review B · doi:10.1103/physrevb.94.094420 · Cited by 246
Magnetic skyrmion bundles and their current-driven dynamics
Tang, J., Wu, Y., Wang, W., Kong, L., Lv, B., Wei, W., Zang, J., Tian, M., & Du, H. (2021) · Nature Nanotechnology · doi:10.1038/s41565-021-00954-9 · Cited by 241
Metadata
- Authors
- Iwasaki, J., Mochizuki, M., & Nagaosa, N.
- Venue
- Nature Communications
- Published
- 2013-02-12
- Volume
- 4
- Issue
- 1
- Pages
- 1463-1463
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2062685551
- Cited by
- 722
- References
- 25
- FWCI
- 26.73
- Type
- journal article
- Language
- en
- Open access
- bronze
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