Current-induced skyrmion generation and dynamics in symmetric bilayers
10.1038/ncomms15765
Crossref journal-article
Springer Science and Business Media LLC
Nature Communications (297)
Abstract

AbstractMagnetic skyrmions are quasiparticle-like textures which are topologically different from other states. Their discovery in systems with broken inversion symmetry sparked the search for materials containing such magnetic phase at room temperature. Their topological properties combined with the chirality-related spin–orbit torques make them interesting objects to control the magnetization at nanoscale. Here we show that a pair of coupled skyrmions of opposite chiralities can be stabilized in a symmetric magnetic bilayer system by combining Dzyaloshinskii–Moriya interaction (DMI) and dipolar coupling effects. This opens a path for skyrmion stabilization with lower DMI. We demonstrate in a device with asymmetric electrodes that such skyrmions can be independently written and shifted by electric current at large velocities. The skyrmionic nature of the observed quasiparticles is confirmed by the gyrotropic force. These results set the ground for emerging spintronic technologies where issues concerning skyrmion stability, nucleation and propagation are paramount.

Bibliography

Hrabec, A., Sampaio, J., Belmeguenai, M., Gross, I., Weil, R., Chérif, S. M., Stashkevich, A., Jacques, V., Thiaville, A., & Rohart, S. (2017). Current-induced skyrmion generation and dynamics in symmetric bilayers. Nature Communications, 8(1).

Authors 10
  1. A. Hrabec (first)
  2. J. Sampaio (additional)
  3. M. Belmeguenai (additional)
  4. I. Gross (additional)
  5. R. Weil (additional)
  6. S. M. Chérif (additional)
  7. A. Stashkevich (additional)
  8. V. Jacques (additional)
  9. A. Thiaville (additional)
  10. S. Rohart (additional)
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Dates
Type When
Created 8 years, 2 months ago (June 8, 2017, 7:12 a.m.)
Deposited 2 years, 8 months ago (Dec. 22, 2022, 8:14 p.m.)
Indexed 1 week, 1 day ago (Aug. 23, 2025, 9:37 p.m.)
Issued 8 years, 2 months ago (June 8, 2017)
Published 8 years, 2 months ago (June 8, 2017)
Published Online 8 years, 2 months ago (June 8, 2017)
Funders 0

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@article{Hrabec_2017, title={Current-induced skyrmion generation and dynamics in symmetric bilayers}, volume={8}, ISSN={2041-1723}, url={http://dx.doi.org/10.1038/ncomms15765}, DOI={10.1038/ncomms15765}, number={1}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Hrabec, A. and Sampaio, J. and Belmeguenai, M. and Gross, I. and Weil, R. and Chérif, S. M. and Stashkevich, A. and Jacques, V. and Thiaville, A. and Rohart, S.}, year={2017}, month=jun }