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Current-driven writing process in antiferromagnetic Mn2Au for memory applications

Reimers, S. ; Lytvynenko, Y. ; Niu, Y. R. LU ; Golias, E. LU orcid ; Sarpi, B. LU ; Veiga, L. S.I. ; Denneulin, T. ; Kovács, A. LU ; Dunin-Borkowski, R. E. and Bläßer, J. , et al. (2023) In Nature Communications 14(1).
Abstract

Current pulse driven Néel vector rotation in metallic antiferromagnets is one of the most promising concepts in antiferromagnetic spintronics. We show microscopically that the Néel vector of epitaxial thin films of the prototypical compound Mn2Au can be reoriented reversibly in the complete area of cross shaped device structures using single current pulses. The resulting domain pattern with aligned staggered magnetization is long term stable enabling memory applications. We achieve this switching with low heating of ≈20 K, which is promising regarding fast and efficient devices without the need for thermal activation. Current polarity dependent reversible domain wall motion demonstrates a Néel spin-orbit torque acting on the... (More)

Current pulse driven Néel vector rotation in metallic antiferromagnets is one of the most promising concepts in antiferromagnetic spintronics. We show microscopically that the Néel vector of epitaxial thin films of the prototypical compound Mn2Au can be reoriented reversibly in the complete area of cross shaped device structures using single current pulses. The resulting domain pattern with aligned staggered magnetization is long term stable enabling memory applications. We achieve this switching with low heating of ≈20 K, which is promising regarding fast and efficient devices without the need for thermal activation. Current polarity dependent reversible domain wall motion demonstrates a Néel spin-orbit torque acting on the domain walls.

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Contribution to journal
publication status
published
subject
in
Nature Communications
volume
14
issue
1
article number
1861
publisher
Nature Publishing Group
external identifiers
  • pmid:37012272
  • scopus:85151646583
ISSN
2041-1723
DOI
10.1038/s41467-023-37569-8
language
English
LU publication?
yes
additional info
Funding Information: We acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—TRR 173—268565370 (project A05 (M.J.), with contribution from A01 (S.R., M.K.)), by the Horizon 2020 Framework Program of the European Commission under FET-Open Grant No. 863155 (s-Nebula) (M.K.), by EU HORIZON-CL4-2021-DIGITAL-EMERGING-01-14 programme under grant agreement No. 101070287 (S.R., M.K.), and by the TopDyn Center (M.K.). B.S. is supported by the UK Engineering and Physical Science Research Council (Grants No. EP/V029258/1). We acknowledge MAX IV Laboratory for time on beamline MAXPEEM under Proposal 20210863 (M.J.), and Diamond Light Source for time on beamline I06 under proposal MM30141-1 (M.J.). Research conducted at MAX IV, a Swedish national user facility, is supported by the Swedish Research council under contract 2018-07152, the Swedish Governmental Agency for Innovation Systems under contract 2018-04969, and Formas under contract 2019-02496. The STEM investigations were funded by the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement 856538 (project “3D MAGIC”) (M.K. and R.E.D.-B.). Funding Information: We acknowledge funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—TRR 173—268565370 (project A05 (M.J.), with contribution from A01 (S.R., M.K.)), by the Horizon 2020 Framework Program of the European Commission under FET-Open Grant No. 863155 (s-Nebula) (M.K.), by EU HORIZON-CL4-2021-DIGITAL-EMERGING-01-14 programme under grant agreement No. 101070287 (S.R., M.K.), and by the TopDyn Center (M.K.). B.S. is supported by the UK Engineering and Physical Science Research Council (Grants No. EP/V029258/1). We acknowledge MAX IV Laboratory for time on beamline MAXPEEM under Proposal 20210863 (M.J.), and Diamond Light Source for time on beamline I06 under proposal MM30141-1 (M.J.). Research conducted at MAX IV, a Swedish national user facility, is supported by the Swedish Research council under contract 2018-07152, the Swedish Governmental Agency for Innovation Systems under contract 2018-04969, and Formas under contract 2019-02496. The STEM investigations were funded by the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement 856538 (project “3D MAGIC”) (M.K. and R.E.D.-B.). Publisher Copyright: © 2023, The Author(s).
id
19003720-ad9b-4260-a8bc-8ae5a39f6cd9
date added to LUP
2024-01-12 14:05:24
date last changed
2024-04-13 08:15:22
@article{19003720-ad9b-4260-a8bc-8ae5a39f6cd9,
  abstract     = {{<p>Current pulse driven Néel vector rotation in metallic antiferromagnets is one of the most promising concepts in antiferromagnetic spintronics. We show microscopically that the Néel vector of epitaxial thin films of the prototypical compound Mn<sub>2</sub>Au can be reoriented reversibly in the complete area of cross shaped device structures using single current pulses. The resulting domain pattern with aligned staggered magnetization is long term stable enabling memory applications. We achieve this switching with low heating of ≈20 K, which is promising regarding fast and efficient devices without the need for thermal activation. Current polarity dependent reversible domain wall motion demonstrates a Néel spin-orbit torque acting on the domain walls.</p>}},
  author       = {{Reimers, S. and Lytvynenko, Y. and Niu, Y. R. and Golias, E. and Sarpi, B. and Veiga, L. S.I. and Denneulin, T. and Kovács, A. and Dunin-Borkowski, R. E. and Bläßer, J. and Kläui, M. and Jourdan, M.}},
  issn         = {{2041-1723}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{Nature Publishing Group}},
  series       = {{Nature Communications}},
  title        = {{Current-driven writing process in antiferromagnetic Mn<sub>2</sub>Au for memory applications}},
  url          = {{http://dx.doi.org/10.1038/s41467-023-37569-8}},
  doi          = {{10.1038/s41467-023-37569-8}},
  volume       = {{14}},
  year         = {{2023}},
}