Unusual Anomalous Hall Effect in a Co_2MnSi/MnGa/Pt Trilayer
Unusual Anomalous Hall Effect in a Co_2MnSi/MnGa/Pt Trilayer
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Co_2MnSi/MnGa/Pt 三层中不寻常的反常霍尔效应
DOI：
10.1088/0256-307x/37/7/077303
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发表时间：
2020
影响因子：
3.5
通讯作者：
Zhao Jianhua
中科院分区：
文献类型：
--
作者：
Li Shan;Lu Jun;Wen Lianjun;Pan Dong;Wang Hailong;Wei Dahai;Zhao Jianhua
An ultra-thin Co_2MnSi(0.5 nm)/MnGa(1.5 nm)bilayer capped with Pt(5 nm)has been successfully grown by molecular-beam epitaxy.It is a potential candidate of synthetic antiferromagnets due to antiferromagnetic coupling between Co_2MnSi and MnGa,which is a promising skyrmion-racetrack-memory medium without skyrmion Hall effect after capping with a Pt layer.Unusual humps in transverse Hall resistance loops are clearly observed in the temperature range from 260 to 400 K.This anomaly is generally attributed to topological Hall effect,but other than that,we prove that non-uniform rotation of magnetic moments in the bilayer with magnetic field sweeping is also a possible mechanism contributed to the unusual hump.
