Spintronic terahertz emitter with integrated electromagnetic control

作     者：Yunqing Jiang Xiaoqiang Zhang Yongshan Liu Pierre Vallobra Sylvain Eimer Fan Zhang Yinchang Du Fengguang Liu Yong Xu Weisheng Zhao 姜芸青;张晓强;刘永山;Pierre Vallobra;Sylvain Eimer;张帆;杜寅昌;刘风光;许涌;赵巍胜

作者机构：School of Integrated Circuit Science and EngineeringHefei Innovation Research InsitituteBeihang UniversityBeijing 100191China Anhui High Reliability Chips Engineering LaboratoryHefei 230013China Key Laboratory of Geospace EnvironmentUniversity of Science and Technology of ChinaHefei 230026China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2022年第20卷第4期

页      面：77-81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）] 08[工学] 

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.12004025 and 11904016) Beihang Hefei Innovation Research Institute Project(No.BHKX-19-01) 

主　　题：spintronic THz emitters trilayer heterostructure electromagnet electrically driven control 

摘      要：Spintronic thin films are considered as one of the promising terahertz(THz)source candidates,owing to their high performance and low *** effort has been made to achieve spintronic THz sources with broadband and high conversion ***,the development of spintronic THz emitters with good compatibility,low cost,and miniaturized technology still faces many ***,it is urgent to extend commercial and portable spintronic THz emitters to satisfy many practical ***,we design a new generation of spintronic THz emitters composed of an alter-nating electromagnet and a miniaturized electronic *** only can this new type of spintronic THz emitter largely simplify the ancillary equipment for spintronic sources,it also has a twice larger THz signal compared to the traditional THz time-domain spectroscopy systems with a mechanical *** results and theoretical calculations for electromagnetic coils show that our design can stably generate THz signals that are independent of the frequency and magnetic field of alternating *** the spin thin film is optimized,a magnetic field as low as 75 G satisfies the require-ment for high performance THz ***,not only is the efficiency of the pump power enhanced,but also the driving current in the electromagnet is *** believe that it has a wide range of applications and profound implications in THz technology based on spintronic emitters in the future.