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Identifying switching of antiferromagnets by spin-orbit torques

Jourdan, Martin ; Bläßer, Jonathan ; Gámez, Guzmán Orero ; Reimers, Sonka ; Odenbreit, Lukas ; Fischer, Miriam ; Niu, Yuran R. LU ; Golias, Evangelos LU orcid ; Maccherozzi, Francesco and Kleibert, Armin , et al. (2025) In Physical Review B 112(10).
Abstract

Antiferromagnets are promising candidates for ultrafast spintronic applications, leveraging current-induced spin-orbit torques. However, experimentally distinguishing between different switching mechanisms of the staggered magnetization (Néel vector) driven by current pulses remains a challenge. In an exemplary study of the collinear antiferromagnetic compound Mn2Au, we demonstrate that slower thermomagnetoelastic effects predominantly govern switching over a wide parameter range. In the regime of short current pulses in the nanosecond range, however, we observe fully Néel spin-orbit torque driven switching. We show that this ultrafast mechanism enables the complete directional alignment of the Néel vector by current pulses... (More)

Antiferromagnets are promising candidates for ultrafast spintronic applications, leveraging current-induced spin-orbit torques. However, experimentally distinguishing between different switching mechanisms of the staggered magnetization (Néel vector) driven by current pulses remains a challenge. In an exemplary study of the collinear antiferromagnetic compound Mn2Au, we demonstrate that slower thermomagnetoelastic effects predominantly govern switching over a wide parameter range. In the regime of short current pulses in the nanosecond range, however, we observe fully Néel spin-orbit torque driven switching. We show that this ultrafast mechanism enables the complete directional alignment of the Néel vector by current pulses in device structures.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B
volume
112
issue
10
article number
104408
publisher
American Physical Society
external identifiers
  • scopus:105021855384
ISSN
2469-9950
DOI
10.1103/tjhp-rzcb
language
English
LU publication?
yes
id
ca41a86e-586a-4a8e-b6e4-984f244e112d
date added to LUP
2026-02-03 13:59:57
date last changed
2026-02-03 13:59:57
@article{ca41a86e-586a-4a8e-b6e4-984f244e112d,
  abstract     = {{<p>Antiferromagnets are promising candidates for ultrafast spintronic applications, leveraging current-induced spin-orbit torques. However, experimentally distinguishing between different switching mechanisms of the staggered magnetization (Néel vector) driven by current pulses remains a challenge. In an exemplary study of the collinear antiferromagnetic compound Mn<sub>2</sub>Au, we demonstrate that slower thermomagnetoelastic effects predominantly govern switching over a wide parameter range. In the regime of short current pulses in the nanosecond range, however, we observe fully Néel spin-orbit torque driven switching. We show that this ultrafast mechanism enables the complete directional alignment of the Néel vector by current pulses in device structures.</p>}},
  author       = {{Jourdan, Martin and Bläßer, Jonathan and Gámez, Guzmán Orero and Reimers, Sonka and Odenbreit, Lukas and Fischer, Miriam and Niu, Yuran R. and Golias, Evangelos and Maccherozzi, Francesco and Kleibert, Armin and Stoll, Hermann and Kläui, Mathias}},
  issn         = {{2469-9950}},
  language     = {{eng}},
  number       = {{10}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review B}},
  title        = {{Identifying switching of antiferromagnets by spin-orbit torques}},
  url          = {{http://dx.doi.org/10.1103/tjhp-rzcb}},
  doi          = {{10.1103/tjhp-rzcb}},
  volume       = {{112}},
  year         = {{2025}},
}