Magnetization switching induced by in-plane current with low density in Pt∕Co∕Pt sandwich
Magnetization switching induced by in-plane current with low density in Pt∕Co∕Pt sandwich
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DOI：
10.1063/1.2175822
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发表时间：
2006-04
影响因子：
3.2
通讯作者：
Weiwei Lin;H. Sang;D. Liu;Z. S. Jiang;A. Hu;Xiaoshan Wu;G. Xiao
中科院分区：
文献类型：
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作者：
Weiwei Lin;H. Sang;D. Liu;Z. S. Jiang;A. Hu;Xiaoshan Wu;G. Xiao
我们观察到具有垂直磁各向异性的Pt scinCo scinPt三明治结构的异常霍尔电阻随外加磁场中电流密度的增加而从正到负急剧变化，表明电流引起的磁化翻转。存在一个临界电流密度，该电流密度随外加磁场的变化而变化，其量级为104 A scincm ~ 2，远低于文献报道的电流感生磁化翻转的临界电流密度。对不同面内电流密度下样品的非寻常霍尔效应的研究表明，当电流密度大于104 A scincm ~ 2时，磁化翻转场随电流密度的增大而减小。
We have observed that the extraordinary Hall resistance of Pt∕Co∕Pt sandwich with perpendicular magnetic anisotropy changes from positive to negative drastically as the current density increases in an applied field, indicating the magnetization switching induced by the current. There exists a critical current density that changes for the different applied field with the order of current density of 104A∕cm2, which is much lower than that reported in literatures on the current-induced magnetization switching. The results of the extraordinary Hall effect of the sample in different in-plane current density show that the magnetization-switching field decreases with the increment of current density when the current density is larger than 104A∕cm2.