Size dependence of the properties of synthetic-antiferromagnet-based stochastic magnetic tunnel junctions for probabilistic computing
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866916726611902464 |
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| author | Kinoshita, Takuma Yoon, Ju-Young Caçoilo, Nuno Mochizuki, Ryota Kaneko, Haruna Kanai, Shun Ohno, Hideo Fukami, Shunsuke |
| author_facet | Kinoshita, Takuma Yoon, Ju-Young Caçoilo, Nuno Mochizuki, Ryota Kaneko, Haruna Kanai, Shun Ohno, Hideo Fukami, Shunsuke |
| contents | Stochastic magnetic tunnel junctions (s-MTJs) are core components for spintronics-based probabilistic computing (p-computing), a promising candidate for energy-efficient unconventional computing. To achieve reliable performance under practical conditions, the use of a synthetic antiferromagnetic (SAF) free-layer configuration was proposed due to its enhanced tolerance to magnetic field perturbations. For engineering the SAF s-MTJs, we systematically investigate the properties of the SAF s-MTJs as a function of the junction size. We observe that decreasing junction size leads to shorter relaxation times, enhanced magnetic field robustness, and enhanced insensitivity to bias voltage. These findings provide key insights toward high-performance p-computers with reliable operation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_05316 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Size dependence of the properties of synthetic-antiferromagnet-based stochastic magnetic tunnel junctions for probabilistic computing Kinoshita, Takuma Yoon, Ju-Young Caçoilo, Nuno Mochizuki, Ryota Kaneko, Haruna Kanai, Shun Ohno, Hideo Fukami, Shunsuke Applied Physics Mesoscale and Nanoscale Physics Stochastic magnetic tunnel junctions (s-MTJs) are core components for spintronics-based probabilistic computing (p-computing), a promising candidate for energy-efficient unconventional computing. To achieve reliable performance under practical conditions, the use of a synthetic antiferromagnetic (SAF) free-layer configuration was proposed due to its enhanced tolerance to magnetic field perturbations. For engineering the SAF s-MTJs, we systematically investigate the properties of the SAF s-MTJs as a function of the junction size. We observe that decreasing junction size leads to shorter relaxation times, enhanced magnetic field robustness, and enhanced insensitivity to bias voltage. These findings provide key insights toward high-performance p-computers with reliable operation. |
| title | Size dependence of the properties of synthetic-antiferromagnet-based stochastic magnetic tunnel junctions for probabilistic computing |
| topic | Applied Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2505.05316 |