Antiferromagnetic spin dynamics in exchanged-coupled Fe/GdFeO_(3) heterostructure

作     者：Na Li Jin Tang Lei Su Ya-Jiao Ke Wei Zhang Zong-Kai Xie Rui Sun Xiang-Qun Zhang Wei He Zhao-Hua Cheng 李娜;汤进;苏磊;柯亚娇;张伟;谢宗凯;孙瑞;张向群;何为;成昭华

作者机构：State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials LaboratoryDongguan 523808China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2021年第30卷第11期

页      面：565-569页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Project supported by the National Key Research Program of China(Grant Nos.2018YFF01010303,2017YFB0702702,and 2016YFA0300701) the National Natural Sciences Foundation of China(Grant Nos.52031015,1187411,51427801,and 51871235) the Key Research Program of Frontier Sciences,Chinese Academy of Sciences(Grant Nos.QYZDJ-SSW-JSC023,KJZD-SW-M01,and ZDYZ2012-2) 

主　　题：ultrafast magnetization dynamics antiferromagnetics magnetic oxides magnetization dynamics 

摘      要：We investigate the ultrafast spin dynamics of an antiferromagnet in a ferromagnet/antiferromagnet heterostructure Fe/GdFeO_(3) via an all-optical *** laser irradiation,the terahertz spin precession is hard to be excited in a bare GdFeO_(3) without spin reorientation phase but efficiently in Fe/GdFeO_(3).Both quasi-ferromagnetic and impurity modes,as well as a phonon mode,are *** attribute it to the optical modification of interfacial exchange coupling between Fe and ***,the excitation efficiency of dynamics can be modified significantly via the pump laser *** results elucidate that the interfacial exchange coupling is a feasible stimulation to efficiently excite terahertz spin dynamics in *** will expand the exploration of terahertz spin dynamics for antiferromagnet-based opto-spintronic devices.