Anomalous Hall effect engineering via interface modification in Co/Pt multilayers

作者：Jiang, Shao-Long; Chen, Xi; Li, Xu-Jing; Yang, Kang; Zhang, Jing-Yan; Yang, Guang; Liu, Yi-Wei; Lu, Jin-Hui; Wang, Dong-Wei^*; Teng, Jiao; Yu, Guang-Hua

来源：Applied Physics Letters, 2015, 107(11): 112404.

DOI：10.1063/1.4931100

An enhanced anomalous Hall effect (AHE) is observed via interface modification in MgO/[Co/Pt](2)/Co/MgO multilayers, due to the insertion of a Hf metal layer at the Co/MgO interface. It is shown that the saturation anomalous Hall resistivity is 215% larger than that in the multilayers without Hf insertion. More importantly, thermally stable AHE and perpendicular magnetic anisotropy features are obtained in MgO/[Co/Pt](2)/Co/Hf/MgO multilayers. The AHE is improved for sample MgO/[Co/Pt](2)/Co/Hf/MgO by annealing, which is attributed to the enhancement of the side jump contribution.

• 出版日期2015-9-14
• 单位北京科技大学