在GdFeCo中从磁性近补偿状态的自旋注入和在电子孔补偿金属YH中逆自旋霍尔效应
Ikuo Yamazaki1, Yukihiro Koinuma1, Tatsuro Hanajiri2
1Division of Material Science, Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan.
Journal of physics. Condensed matter : an Institute of Physics journal
|November 15, 2024
概括
稀土过渡金属铁磁铁可以为自旋电子设备提供高效的自旋运输. 实验表明,YH2中的反旋霍尔效应对旋转注入和运输至关重要,需要增强的旋转扩散长度和注入效率.
科学领域:
- 这就是Spintronics.
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 稀土过渡金属 (RE-TM) 铁磁铁为基于旋转的技术提供了独特的特性.
- 它们的反铁磁合和旋转注入能力是其关键优势.
- RE-TM 材料表现出温度依赖的自旋两极化,这对于设备运行至关重要.
研究的目的:
- 为了研究RE-TM铁磁铁中的旋转运输现象.
- 探索反旋霍尔效应 (ISHE) 在旋转注入和检测中的作用.
- 分析GdFeCo/YH2/GdFeCo异构结构中的旋转运输特性.
主要方法:
- 使用RE-TM铁磁铁作为旋转注入器/喷射器进行了旋转运输实验.
- 在YH2中测量了横向电阻 (RT) 的温度依赖性.
- ISHE的分析配方是为了回归分析而开发的.
主要成果:
- 在YH2中,反旋霍尔效应 (ISHE) 被确定为观察到的横向电阻变化的来源.
- 在290-300K之间观察到RT循环极性的明显变化,与GdFeCo电极行为相关.
- 该研究表明,需要在YH2中增强旋转扩散长度,提高旋转注入效率.
结论:
- 由于其旋转传输特性,RE-TM铁磁铁对基于旋转的设备具有前景.
- 在 YH2 中的 ISHE 在磁性异构结构中的旋转操纵中发挥着重要作用.
- 优化旋转扩散长度和注入效率对于推进基于RE-TM的旋转电子应用至关重要.
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