Field-free magnetization reversal by spin-Hall effect and exchange bias
10.1038/ncomms10854
Crossref journal-article
Springer Science and Business Media LLC
Nature Communications (297)
Abstract

AbstractAs the first magnetic random access memories are finding their way onto the market, an important issue remains to be solved: the current density required to write magnetic bits becomes prohibitively high as bit dimensions are reduced. Recently, spin–orbit torques and the spin-Hall effect in particular have attracted significant interest, as they enable magnetization reversal without high current densities running through the tunnel barrier. For perpendicularly magnetized layers, however, the technological implementation of the spin-Hall effect is hampered by the necessity of an in-plane magnetic field for deterministic switching. Here we interface a thin ferromagnetic layer with an anti-ferromagnetic material. An in-plane exchange bias is created and shown to enable field-free S HE-driven magnetization reversal of a perpendicularly magnetized Pt/Co/IrMn structure. Aside from the potential technological implications, our experiment provides additional insight into the local spin structure at the ferromagnetic/anti-ferromagnetic interface.

Bibliography

van den Brink, A., Vermijs, G., Solignac, A., Koo, J., Kohlhepp, J. T., Swagten, H. J. M., & Koopmans, B. (2016). Field-free magnetization reversal by spin-Hall effect and exchange bias. Nature Communications, 7(1).

Authors 7
  1. A. van den Brink (first)
  2. G. Vermijs (additional)
  3. A. Solignac (additional)
  4. J. Koo (additional)
  5. J. T. Kohlhepp (additional)
  6. H. J. M. Swagten (additional)
  7. B. Koopmans (additional)
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Dates
Type When
Created 9 years, 5 months ago (March 4, 2016, 6:48 a.m.)
Deposited 2 years, 7 months ago (Jan. 4, 2023, 6:43 a.m.)
Indexed 21 minutes ago (Aug. 28, 2025, 9:42 p.m.)
Issued 9 years, 5 months ago (March 4, 2016)
Published 9 years, 5 months ago (March 4, 2016)
Published Online 9 years, 5 months ago (March 4, 2016)
Funders 0

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@article{van_den_Brink_2016, title={Field-free magnetization reversal by spin-Hall effect and exchange bias}, volume={7}, ISSN={2041-1723}, url={http://dx.doi.org/10.1038/ncomms10854}, DOI={10.1038/ncomms10854}, number={1}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={van den Brink, A. and Vermijs, G. and Solignac, A. and Koo, J. and Kohlhepp, J. T. and Swagten, H. J. M. and Koopmans, B.}, year={2016}, month=mar }