Identifying Switching of Antiferromagnets by Spin-Orbit Torques
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arXiv
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| Format: | Preprint |
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2024
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| author | Jourdan, Martin Bläßer, Jonathan Gámez, Guzmán Orero Reimers, Sonka Odenbreit, Lukas Fischer, Miriam Niu, Yuran Golias, Evangelos Maccherozzi, Francesco Kleibert, Armin Stoll, Hermann Kläui, Mathias |
| author_facet | Jourdan, Martin Bläßer, Jonathan Gámez, Guzmán Orero Reimers, Sonka Odenbreit, Lukas Fischer, Miriam Niu, Yuran Golias, Evangelos Maccherozzi, Francesco Kleibert, Armin Stoll, Hermann Kläui, Mathias |
| contents | 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$_2$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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_15885 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Identifying Switching of Antiferromagnets by Spin-Orbit Torques Jourdan, Martin Bläßer, Jonathan Gámez, Guzmán Orero Reimers, Sonka Odenbreit, Lukas Fischer, Miriam Niu, Yuran Golias, Evangelos Maccherozzi, Francesco Kleibert, Armin Stoll, Hermann Kläui, Mathias Applied Physics Mesoscale and Nanoscale Physics 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$_2$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. |
| title | Identifying Switching of Antiferromagnets by Spin-Orbit Torques |
| topic | Applied Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2412.15885 |