Heusler alloys for metal spintronics
Heusler alloys for metal spintronics
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DOI：
10.1557/s43577-022-00350-1
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发表时间：
2022-06-23
期刊：
影响因子：
5
通讯作者：
Lloyd, David C.
中科院分区：
文献类型：
--
作者：
Hirohata, Atsufumi;Lloyd, David C.
Heusler合金由于其在室温下的半金属性而被理论预测和实验证明是理想的自旋源。半金属度还提供低吉尔伯特阻尼常数，用于具有低开关电流密度的快速磁化反转。这些固有特性可以在基于自旋转移矩的器件中提供更好的可操作性。此外，自旋轨道扭矩可以使用Heusler合金施加自旋霍尔和caloritronic效应。这些性能可以通过取代Heusler合金中的组成元素来精确控制。本文综述了这些自旋电子器件的最新研究进展，并对其发展前景进行了展望。
Heusler alloys have been theoretically predicted and experimentally demonstrated to be an ideal spin source due to their half-metallicity at room temperature. The half-metallicity also offers low Gilbert damping constants for fast magnetization reversal with low switching current density. These intrinsic properties can offer better operationability in spin-transfer-torque-based devices. In addition spin-orbit torque can be exerted using Heusler alloys for spin Hall and caloritronic effects. These properties can be precisely controlled by substituting the constituent elements in a Heusler alloy. We review the recent development on these spintronic devices and summarize their future perspectives.