Unusual Anomalous Hall Effect in a Co2MnSi/MnGa/Pt Trilayer

作     者：Shan Li Jun Lu Lian-Jun Wen Dong Pan Hai-Long Wang Da-Hai Wei Jian-Hua Zhao 黎姗;鲁军;文炼均;潘东;王海龙;魏大海;赵建华

作者机构：State Key Laboratory of Superlattices and MicrostructuresInstitute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering&CAS Center of Excellence in Topological Quantum ComputationUniversity of Chinese Academy of SciencesBeijing 100190China Beijing Academy of Quantum Information ScienceBeijing 100193China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2020年第37卷第7期

页      面：96-99页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：Supported by the National Program on Key Basic Research Project under Grant No.2018YFB0407601 the Strategic Priority Research Program of the Chinese Academy of Sciences under Grant Nos.XDB44000000 and QYZDY-SSW-JSC015 the National Natural Science Foundation of China under Grant Nos.11874349 and 11774339 

主　　题：layer. usual MnGa 

摘      要：An ultra-thin Co2MnSi(0.5 nm)/Mn Ga(1.5 nm) bilayer capped with Pt(5 nm) has been successfully grown by molecular-beam *** is a potential candidate of synthetic antiferromagnets due to antiferromagnetic coupling between Co2MnSi and MnGa,which is a promising skyrmion-racetrack-memory medium without skyrmion Hall effect after capping with a Pt *** humps in transverse Hall resistance loops are clearly observed in the temperature range from 260 to 400 *** 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.