高效的无电场切换垂直的伊特铁石榴石与对直线旋转电流
Man Yang1, Liang Sun1, Yulun Zeng1
1National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, and Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, P.R. China.
Nature communications
|April 13, 2024
概括
研究人员在Permalloy中使用直线自旋电流实现了高效的无磁场磁化切换. 这种无重金属的方法为先进的自旋电子设备提供了新的途径.
科学领域:
- 这就是Spintronics.
- 马格尼尼克斯公司 (Magnonics)
- 材料科学 材料科学 材料科学
背景情况:
- 伊特铁石榴石 (YIG) 是一个关键的磁绝缘体在spintronics和magnonics由于其低磁阻尼和长的磁扩散长度.
- 对于高性能自旋电子设备来说,对YIG磁化有效的无电场电气控制至关重要.
研究的目的:
- 在YIG中使用对直线自旋电流来证明垂直磁化的无电场电气控制.
- 研究在无重金属系统中磁化开关的效率和机制.
主要方法:
- 使用一个直线旋转电流,其极化和传播垂直于接口.
- 采用无重金属材料的永久合金,用于旋转电流的产生.
- 进行了直接和反向效应测量,以分析旋转电流特性.
主要成果:
- 在YIG中使用Permalloy实现了高效的无磁场磁化切换.
- 与使用白金 (Pt) 相比,证明了更高的效率.
- 将对直线旋转电流归因于Permalloy中的异常旋转霍尔效应.
结论:
- 这项研究提出了一种新的方法,用于在自旋电子设备中进行无磁场磁化切换.
- 突出了Permalloy在通过异常的旋转霍尔效应有效地产生旋转电流方面的潜力.
- 开辟了开发先进,无重金属的自旋电子应用的新途径.
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