电场调控磁性的研究进展:材料、机制与器件  

Progress in electric field control of magnetism:Materials,mechanisms,and devices

作　　者：崔彬[1] 成彬[1] 胡季帆[1] Bin Cui;Bin Cheng;Jifan Hu(School of Physics,Shandong University,Jinan 250100,China)

机构地区：[1]山东大学物理学院,济南250100

出　　处：《科学通报》2021年第16期2042-2060,共19页Chinese Science Bulletin

基　　金：国家自然科学基金(12074221,52002222,11904204,51472150);中国博士后科学基金(2019M652355)资助。

摘　　要：电控磁效应利用电场作用实现对材料磁学特性的调控,对推动低能耗、高速度、高密度自旋电子学器件的发展具有重要意义.本文将以电控磁的机制为主线展开,按照载流子调控、应变、交换耦合、轨道重构和离子迁移5种机制,从材料、性能和器件应用的角度对电场调控磁性领域的研究进展进行系统总结和归纳,以期尽量全面地为读者呈现出该领域的发展现状,并展望领域内的挑战和未来的发展方向.Using the spin degree of freedom to realize the information storage and processing is a promising way to overcome the challenges of high chip heat loss and quantum size effect in classic semiconductor devices of nanoscale,which has developed to be a hot research area of spintronics.The manipulation of magnetism is one of the core topics in the field of spintronics.Various routes have been developed to control the magnetism,such as magnet,strain,chemical doping,current,and light.With the advantages of reversibility,low-energy consumption,and good compatibility with semiconductor industry,manipulation of magnetism using an electric field attracts increasing research interest and shows enormous potential for application.Actually,the possibility of tuning the magnetism by an electrical way was firstly proposed by the Maxwell’s equation and the thought of the electric field control of magnetism could date back to the 1960s.After the experimental realization of the electric field control of magnetism in diluted magnetic semiconductor(In,Mn)As by Ohno et al.in 2000,such a technology has been utilized to manipulate the magnetic properties of different magnetic metals,oxides,topological insulators,and two-dimensional materials.The physical mechanisms behind the electric field control of magnetism also attract a lot of attention.In this review,we summarize the recent progress of electric field control of magnetism in different materials and devices based on their mechanisms:Carrier-density,strain,exchange coupling,orbital reconstruction,and ion migration.Various magnetic properties,like Curie temperature,magnetic moment,magnetic anisotropy,coercivity,and exchange bias have been effectively modulated by the electric field.Among them,the electric field controls of magnetic anisotropy,coercivity,and exchange bias are thought to be promising routes for magnetization switching based on the pure electric field.Meanwhile,the electric field is also used to control the different magnetoresistance and spin-related transport proper

关 键 词：电控磁效应 自旋电子学 磁电耦合 磁性材料与器件 强关联电子系统 

分 类 号：O469[理学—凝聚态物理]