铁电氧化物异质结界面的可逆磁转变

作     者：陈嘉璐 张子君 罗亮 陆赟豪 宋成 程荻 陈星 李玮 任召辉 王继刚 田鹤 张泽 韩高荣 Jialu Chen;Zijun Zhang;Liang Luo;Yunhao Lu;Cheng Song;Di Cheng;Xing Chen;Wei Li;Zhaohui Ren;Jigang Wang;He Tian;Ze Zhang;Gaorong Han

作者机构：State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringCyrus Tang Center for Sensor Materials and ApplicationZhejiang UniversityHangzhou 310027China Center of Electron MicroscopeSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China Department of Physics and AstronomyIowa State University and Ames Laboratory-USDOEAmes1A 50011USA Department of PhysicsZhejiang UniversityHangzhou 310027China Key Laboratory of Advanced Materials(Ministry of Education)School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China 

基　　金：supported by the National Natural Science Foundation of China (U1909212, U1809217, and 11474249) supported by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering (Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358) 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2020年第65卷第24期

页      码：2094-2099,M0005页

摘      要：由于极化不连续,氧化物异质界面产生了二维电子气、超导性和铁磁性等新奇物理效应.而实现这些新奇物理效应的调控则为阐明其基本物理原理和开发新颖的电子/磁性器件提供了契机.本工作报道了SrTiO_(3)/PbTiO_(3)界面处的极化屏蔽驱动Ti原子发生电子重构,从而产生室温铁磁性.进一步地,磁场可以诱导这种铁磁性与反铁磁之间的可逆转变.研究表明, SrTiO_(3)/PbTiO_(3)异质结的铁磁性源于界面处的Ti3d轨道局域磁矩与自由电子之间的耦合作用,其可逆磁转变与磁场诱导的电子局域化有关.这些发现为氧化物界面磁性的产生及其磁场调控提供了新的见解,有望为新型器件的设计与应用提供可能.

主 题 词：物理效应 磁性器件 新型器件 物理原理 超导性 二维电子气 磁场诱导 室温铁磁性 

学科分类：08[工学] 080501[080501] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1016/j.scib.2020.09.024

馆 藏 号：203989922...