在电流诱导的旋转轨道扭矩驱动的磁域墙壁设备中通过几何控制的二极管和选择性路由功能
Elena M Şteţco1,2, Traian Petrişor1, Ovidiu A Pop2
1Centre for Superconductivity, Spintronics and Surface Science, Physics and Chemistry Department, Technical University of Cluj-Napoca, Str. Memorandumului, 400114 Cluj-Napoca, Romania.
Nano letters
|October 27, 2024
概括
研究人员通过倾斜电流路径来控制磁器件中的域壁运动. 这创建了一个域壁二极管和选择器,使新的内存和计算技术.
科学领域:
- 这就是Spintronics.
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 在重金属/铁磁铁异构结构中的电流诱导的域壁 (DW) 运动是下一代内存和计算的关键.
- 对于设备应用来说,理解和控制DW动态是必不可少的.
研究的目的:
- 为了研究角域壁管道对电流诱导的DW运动的影响.
- 为了展示新的设备功能,如域壁二极管和选择器.
主要方法:
- 制造重金属/铁磁体结构,采用专门设计的DW管道.
- 电力传输测量用于观察和分析不同电流方向和导管几何形状下的DW运动.
- 使用界面Dzyaloshinskii-Moriya交互 (iDMI) 来调整DW行为.
主要成果:
- 一个角 (45°) 的管道截面会诱导不对称的DW运动,阻碍或阻断一个极性,同时允许另一个极性的自由通行.
- 这种不对称性使得能够创建一个功能域的墙壁二极管.
- 一个Y形管道以+45°和-45°的分支作为域壁选择器,根据它们的极性路由DWs.
结论:
- 调整DW导管与电流方向之间的角度为电流诱导的DW运动提供了一个新的控制参数.
- 经过演示的DW二极管和选择器功能为先进的自旋电子设备铺平了道路.
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