旋转轨道扭矩驱动垂直磁化切换用于协同/协同多层系统中的人工突触
Shaomin Li1,2,3, Yidan Wei4, Yuanyuan Chen1,3
1School of Integrated Circuits, Jiangnan University, Wuxi 214401, China.
Nanomaterials (Basel, Switzerland)
|February 26, 2026
概括
这项研究探讨了先进的人工突触器件的Co/Ho多层系统. 这些材料展示了高效的旋转轨道扭矩 (SOT) 切换,使多态行为对于神经形态计算应用至关重要.
科学领域:
- 这就是Spintronics.
- 材料科学 材料科学 材料科学
- 神经形态工程的神经形态工程
背景情况:
- 基于旋转轨道扭矩 (SOT) 的旋转器件对人工突触有希望,因为它们的非挥发性,速度和低功率.
- 高性能SOT人工突触器件需要在SOT驱动磁化开关方面取得突破.
- 磁层的性能和结构对于SOT设备的开发至关重要.
研究的目的:
- 研究Co/Ho多层系统的SOT驱动磁化开关特性.
- 探索Co/Ho多层在人工突触中的应用潜力.
- 优化Co/Ho多层结构以提高SOT效率和磁性.
主要方法:
- 制造和描述具有不同周期参数的Co/Ho多层结构.
- 调查SOT驱动的磁化切换行为.
- 对垂直磁性异构 (PMA) 和旋转霍尔角的分析.
主要成果:
- 通过调整周期性参数,在厚厚的Co/Ho层中实现稳定的高垂直磁性异构性 (PMA).
- 在Co/Ho接口上的反铁磁合的解,提高了SOT的效率.
- 证明了高旋转霍尔角 (高达0.22) 和高效的SOT切换8.4纳米磁层.
- 观察到适合突触重量更新的多态磁化切换行为.
结论:
- Co/Ho 多层系统为高性能 SOT 人工突触设备提供了一个可行的平台.
- 优化的多层结构和理解接口效应显著提高了SOT的效率.
- 演示的多态切换突出了神经形态计算应用的潜力.
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