Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance
Tuning giant anomalous Hall resistance ratio in perpendicular Hall balance
复制标题
DOI：
10.1063/1.4918372
复制
发表时间：
2015-04
影响因子：
4
通讯作者：
J. Y. Zhang;G. Yang;S. Wang;J. L. Liu;Rongming Wang;E. Amsellem;A. Kohn;G. Yu
中科院分区：
文献类型：
--
作者：
J. Y. Zhang;G. Yang;S. Wang;J. L. Liu;Rongming Wang;E. Amsellem;A. Kohn;G. Yu
在[Pt/Co]4/NiO/[Co/Pt]4核心结构的垂直霍尔平衡中，室温下的反常霍尔效应通过功能CoO层进行了调谐，其中[Pt/Co]4多层呈现垂直磁各向异性。CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO体系的巨霍尔电阻比达到69 900%，饱和霍尔电阻（RSP）达到2590 mΩ，分别比无CoO结构提高了302%和146%。透射电镜显示高度织构的[Co/Pt]4多层和具有局部外延关系的氧化层，表明晶体结构对自旋相关输运性能有显著影响。
Anomalous Hall effect at room temperature in perpendicular Hall balance with a core structure of [Pt/Co]4/NiO/[Co/Pt]4 has been tuned by functional CoO layers, where [Pt/Co]4 multilayers exhibit perpendicular magnetic anisotropy. A giant Hall resistance ratio up to 69 900% and saturation Hall resistance (RSP) up to 2590 mΩ were obtained in CoO/[Pt/Co]4/NiO/[Co/Pt]4/CoO system, which is 302% and 146% larger than that in the structure without CoO layers, respectively. Transmission electron microscopy shows highly textured [Co/Pt]4 multilayers and oxide layers with local epitaxial relations, indicating that the crystallographic structure has significant influence on spin dependent transport properties.