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Van der Waals ferromagnetic Josephson junctions

文献类型：期刊论文

作者Ai, Linfeng6,7,8; Zhang, Enze7,8; Yang, Jinshan5; Xie, Xiaoyi6,7,8; Yang, Yunkun7,8; Jia, Zehao6,7,8; Zhang, Yuda6,7,8; Liu, Shanshan7,8; Li, Zihan7,8; Leng, Pengliang6,7,8
刊名NATURE COMMUNICATIONS
出版日期2021-11-12
卷号12期号:1页码:9
DOI10.1038/s41467-021-26946-w
通讯作者Xiu, Faxian(Faxian@fudan.edu.cn) ; Dong, Shaoming(smdong@mail.sic.ac.cn)
英文摘要Superconductor-ferromagnet interfaces in two-dimensional heterostructures present a unique opportunity to study the interplay between superconductivity and ferromagnetism. The realization of such nanoscale heterostructures in van der Waals (vdW) crystals remains largely unexplored due to the challenge of making atomically-sharp interfaces from their layered structures. Here, we build a vdW ferromagnetic Josephson junction (JJ) by inserting a few-layer ferromagnetic insulator Cr2Ge2Te6 into two layers of superconductor NbSe2. The critical current and corresponding junction resistance exhibit a hysteretic and oscillatory behavior against in-plane magnetic fields, manifesting itself as a strong Josephson coupling state. Also, we observe a central minimum of critical current in some JJ devices as well as a nontrivial phase shift in SQUID structures, evidencing the coexistence of 0 and pi phase in the junction region. Our study paves the way to exploring sensitive probes of weak magnetism and multifunctional building-blocks for phase-related superconducting circuits using vdW heterostructures. The superconductor-ferromagnet interface provides a unique opportunity to study the interplay between superconductivity and ferromagnetism. Here, the authors build a van der Waals ferromagnetic Josephson junction evidencing a strong 0 and pi phase Josephson coupling.
资助项目National Natural Science Foundation of China[51772310] ; National Natural Science Foundation of China[11934005] ; National Natural Science Foundation of China[11874116] ; National Key Research and Development Program of China[2017YFA0303302] ; National Key Research and Development Program of China[2018YFA0305601] ; Science and Technology Commission of Shanghai[19511120500] ; Shanghai Municipal Science and Technology Major Project[2019SHZDZX01] ; Program of Shanghai Academic/Technology Research Leader[20XD1400200] ; China Postdoctoral Innovative Talents Support Program[BX20190085] ; China Postdoctoral Science Foundation[2019M661331]
WOS研究方向Science & Technology - Other Topics
语种英语
出版者NATURE PORTFOLIO
WOS记录号WOS:000718060500028
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Science and Technology Commission of Shanghai ; Shanghai Municipal Science and Technology Major Project ; Program of Shanghai Academic/Technology Research Leader ; China Postdoctoral Innovative Talents Support Program ; China Postdoctoral Science Foundation
源URL[http://ir.imr.ac.cn/handle/321006/167565]  
专题金属研究所_中国科学院金属研究所
通讯作者Xiu, Faxian; Dong, Shaoming
作者单位1.Shanghai Res Ctr Quantum Sci, Shanghai 201315, Peoples R China
2.Fudan Univ, Inst Nanoelect Devices & Quantum Comp, Shanghai 200433, Peoples R China
3.Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
5.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
6.Shanghai Qi Zhi Inst, 41th Floor,AI Tower,701 Yunjin Rd, Shanghai 200232, Peoples R China
7.Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
8.Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China
9.ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 201210, Peoples R China
推荐引用方式
GB/T 7714		 Ai, Linfeng,Zhang, Enze,Yang, Jinshan,et al. Van der Waals ferromagnetic Josephson junctions[J]. NATURE COMMUNICATIONS,2021,12(1):9.
APA Ai, Linfeng.,Zhang, Enze.,Yang, Jinshan.,Xie, Xiaoyi.,Yang, Yunkun.,...&Dong, Shaoming.(2021).Van der Waals ferromagnetic Josephson junctions.NATURE COMMUNICATIONS,12(1),9.
MLA Ai, Linfeng,et al."Van der Waals ferromagnetic Josephson junctions".NATURE COMMUNICATIONS 12.1(2021):9.

入库方式： OAI收割

来源：金属研究所

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