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| Format: | Preprint |
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2025
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| Accès en ligne: | https://arxiv.org/abs/2501.14200 |
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| _version_ | 1866908275374555136 |
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| author | Yang, Yifei Wang, Jian-Ping |
| author_facet | Yang, Yifei Wang, Jian-Ping |
| contents | Spin-orbit torque (SOT) has been extensively studied as a key mechanism in spintronics applications. However, conventional SOT materials limit the spin polarization direction to the in-plane orientation, which is suboptimal for efficient magnetization switching. Recently, spin currents with spin polarization along multiple directions have been observed in low-symmetry materials, offering a promising energy-efficient strategy for the field-free switching of magnetic materials with perpendicular magnetic anisotropy. However, the efficiency of this mechanism is highly dependent on the crystallographic texture of the SOT materials, a critical factor that, to date, has not been quantitatively investigated. In this study, we present a comprehensive numerical investigation into the impact of both in-plane and out-of-plane crystallographic textures of SOT materials on the unconventional SOT generated by Dresselhaus-like and out-of-plane spin polarizations. By employing a theoretical orientation distribution function, we calculate the effective unconventional SOT values for SOT materials with tunable crystallographic texture. This analysis provides a framework for the synthesis and optimization of future low-symmetry SOT materials, which can enhance operational efficiency for spintronics applications in magnetoresistive random-access memory and spin logic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_14200 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Enhancing Unconventional Spin-Orbit Torque Efficiency: Numerical Study on the Influence of Crystallographic Texture and Polycrystalline Effects on Low-Symmetry Materials Yang, Yifei Wang, Jian-Ping Mesoscale and Nanoscale Physics Materials Science Spin-orbit torque (SOT) has been extensively studied as a key mechanism in spintronics applications. However, conventional SOT materials limit the spin polarization direction to the in-plane orientation, which is suboptimal for efficient magnetization switching. Recently, spin currents with spin polarization along multiple directions have been observed in low-symmetry materials, offering a promising energy-efficient strategy for the field-free switching of magnetic materials with perpendicular magnetic anisotropy. However, the efficiency of this mechanism is highly dependent on the crystallographic texture of the SOT materials, a critical factor that, to date, has not been quantitatively investigated. In this study, we present a comprehensive numerical investigation into the impact of both in-plane and out-of-plane crystallographic textures of SOT materials on the unconventional SOT generated by Dresselhaus-like and out-of-plane spin polarizations. By employing a theoretical orientation distribution function, we calculate the effective unconventional SOT values for SOT materials with tunable crystallographic texture. This analysis provides a framework for the synthesis and optimization of future low-symmetry SOT materials, which can enhance operational efficiency for spintronics applications in magnetoresistive random-access memory and spin logic devices. |
| title | Enhancing Unconventional Spin-Orbit Torque Efficiency: Numerical Study on the Influence of Crystallographic Texture and Polycrystalline Effects on Low-Symmetry Materials |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2501.14200 |