Intriguing magnetoelectric effect in two-dimensional ferromagnetic/perovskite oxide ferroelectric heterostructure

作     者：Ping Li Xue-Song Zhou Zhi-Xin Guo 

作者机构：State Key Laboratory for Mechanical Behavior of MaterialsCenter for Spintronics and Quantum SystemSchool of Materials Science and EngineeringXi’an Jiaotong UniversityXi’anShaanxi710049China Key Laboratory for Computational Physical Sciences(Ministry of Eduction)Fudan UniversityShanghai200433China Key Laboratory of Polar Materials and Devices(Ministry of Education)East China Normal UniversityShanghai200241China 

出 版 物：《npj Computational Materials》 (计算材料学（英文）)

年 卷 期：2022年第8卷第1期

页      面：121-127页

核心收录：

学科分类：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] 

基　　金：This work is supported by National Natural Science Foundation of China(Nos.12074301 and 12004295) National Key R&D Program of China(2018YFB0407600) the Science Fund for Distinguished Young Scholars of Hunan Province(No.2018JJ1022) P.L.thanks China’s Postdoctoral Science Foundation funded project(No.2020M673364) the Open Project of the Key Laboratory of Computational Physical Sciences(Ministry of Education).Z.X.G.thanks the Fundamental Research Funds for Central Universities(No.xzy012019062) Open Research Fund of Key Laboratory of Polar Materials and Devices,Ministry of Education 

主　　题：magnets perovskite ferromagnetic 

摘      要：Two-dimensional (2D) magnets have broad application prospects in the spintronics,but how to effectively control them with a small electric field is still an *** we propose that 2D magnets can be efficiently controlled in a multiferroic heterostructure composed of 2D magnetic material and perovskite oxide ferroelectric (POF) whose dielectric polarization is easily flipped under a small electric *** illustrate the feasibility of such strategy in the bilayer CrI_(3)/BiFeO_(3)(001) heterostructure by using the first-principles *** from the traditional POF multiferroic heterostructures which have strong interface interactions,we find that the interface interaction between CrI_(3) and BiFeO_(3)(001) is van der Waals ***,the heterostructure has particular strong magnetoelectric coupling where the bilayer CrI_(3) can be efficiently switched between ferromagnetic and antiferromagnetic types by the polarized states P↑ and P↓ of BiFeO_(3)(001).We also discover the competing effect between electron doping and the additional electric field on the interlayer exchange coupling interaction of CrI_(3),which is responsible to the magnetic phase *** results provide a avenue for the tuning of 2D magnets with a small electric field.