在非线性反铁磁体Mn3Ge中非传统的旋转电流
Cuimei Cao1, Shiwei Chen2,3, Nian Xie4
1School of Integrated Circuits and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China.
Nano letters
|June 2, 2025
概括
研究人员在Mn3Ge中产生了非常规的旋转轨道扭矩,使能量效率高的旋转电子设备控制成为可能. 这为先进的神经形态计算和记忆应用铺平了道路.
科学领域:
- 这就是Spintronics.
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 非传统的旋转轨道扭矩 (SOT) 对于旋转器件中能效磁化控制至关重要.
- 非线性反铁磁铁 (NCAF) 是产生非常规SOT的有希望的.
- 三是一种有趣的材料,可用于自旋电子应用.
研究的目的:
- 为了研究非线性反铁磁Mn3Ge.Ge.中旋转扭矩的产生.
- 在一个基于Mn3Ge的设备中演示全电SOT开关.
- 探索Mn3Ge设备在神经形态计算中的潜力.
主要方法:
- 旋转扭矩铁磁共振 (ST-FMR) 技术被用来检测非常规的旋转极化.
- 完全电动的SOT开关是在一个具有垂直磁性异构 (PMA) 的Mn3Ge设备上进行的.
- 分析了对仿真人工突触的记忆行为.
主要成果:
- 在Mn3Ge.中观察到非常规的旋转极化 (x和z极化的旋转电流).
- 成功实现了全电动SOT切换,临界电流密度为4.2 × 10^6 A/cm^2.
- 在CNN任务中,Mn3Ge设备展示了记忆行为,以92.5%的准确度模拟人工突触.
结论:
- 三是产生非常规SOT的可行材料.
- 展示了Mn3Ge设备中的全电SOT开关和记忆行为.
- 这些发现支持开发节能的自旋电子记忆和神经形态计算.
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