Spin–Orbit Torque Switching in a Nearly Compensated Heusler Ferrimagnet
Spin–Orbit Torque Switching in a Nearly Compensated Heusler Ferrimagnet
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DOI：
10.1002/adma.201805361
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发表时间：
2018-11
影响因子：
29.4
通讯作者：
Joseph Finley;Chia-Hao Lee;Pinshane Y. Huang;Luqiao Liu
中科院分区：
文献类型：
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作者：
Joseph Finley;Chia-Hao Lee;Pinshane Y. Huang;Luqiao Liu
亚铁磁性材料结合了反铁磁体的低磁矩和易于实现铁磁体的磁读取的优点。最近的研究表明，在Heusler合金中可以实现补偿亚铁磁性半金属，同时可以实现高自旋极化、零磁矩和低磁阻。本文通过研究Heusler合金Mn2Ru1−x Ga的自旋轨道扭矩引起的磁开关，发现在垂直各向异性强、膜厚较大的近似补偿样品中可以实现有效的电流感应磁开关。这项工作证明了将补偿的Heusler合金用于快速、节能的自旋电子器件的可能性。
Ferrimagnetic materials combine the advantages of the low magnetic moment of an antiferromagnet and the ease of realizing magnetic reading of a ferromagnet. Recently, it was demonstrated that compensated ferrimagnetic half metals can be realized in Heusler alloys, where high spin polarization, zero magnetic moment, and low magnetic damping can be achieved at the same time. In this work, by studying the spin–orbit torque induced switching in the Heusler alloy Mn2Ru1− x Ga, it is found that efficient current‐induced magnetic switching can be realized in a nearly compensated sample with strong perpendicular anisotropy and large film thickness. This work demonstrates the possibility of employing compensated Heusler alloys for fast, energy‐efficient spintronic devices.