Fast barrier-free switching in synthetic antiferromagnets
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2021
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| _version_ | 1866911761144217600 |
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| author | Dzhezherya, Yu. Kalita, V. Polynchuk, P. Kravets, A. Korenivski, V. Kruchinin, S. Bellucci, S. |
| author_facet | Dzhezherya, Yu. Kalita, V. Polynchuk, P. Kravets, A. Korenivski, V. Kruchinin, S. Bellucci, S. |
| contents | We analytically solve the Landau-Lifshitz equations for the collective magnetization dynamics in a synthetic antiferromagnet (SAF) nanoparticle and uncover a regime of barrier-free switching under a short small-amplitude magnetic field pulse applied perpendicular to the SAF plane. We give examples of specific implementations for forming such low-power and ultra-fast switching pulses. For fully optical, resonant, barrier-free SAF switching we estimate the power per write operation to be $ \sim 100 $ pJ, 10-100 times smaller than for conventional quasi-static rotation, which should be attractive for memory applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2110_02138 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Fast barrier-free switching in synthetic antiferromagnets Dzhezherya, Yu. Kalita, V. Polynchuk, P. Kravets, A. Korenivski, V. Kruchinin, S. Bellucci, S. Mesoscale and Nanoscale Physics We analytically solve the Landau-Lifshitz equations for the collective magnetization dynamics in a synthetic antiferromagnet (SAF) nanoparticle and uncover a regime of barrier-free switching under a short small-amplitude magnetic field pulse applied perpendicular to the SAF plane. We give examples of specific implementations for forming such low-power and ultra-fast switching pulses. For fully optical, resonant, barrier-free SAF switching we estimate the power per write operation to be $ \sim 100 $ pJ, 10-100 times smaller than for conventional quasi-static rotation, which should be attractive for memory applications. |
| title | Fast barrier-free switching in synthetic antiferromagnets |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2110.02138 |