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Quantum Hall phase in graphene engineered by interfacial charge coupling

文献类型：期刊论文

作者Wang, Yaning1,2,3,4,5; Gao, Xiang1,3; Yang, Kaining1,3; Gu, Pingfan6,7,8; Lu, Xin9; Zhang, Shihao9,10; Gao, Yuchen6,7,8; Ren, Naijie1,3; Dong, Baojuan1,3; Jiang, Yuhang11
刊名NATURE NANOTECHNOLOGY
出版日期2022-11-21
页码9
ISSN号1748-3387
DOI10.1038/s41565-022-01248-4
通讯作者Mao, Jinhai(jhmao@ucas.ac.cn) ; Liu, Jianpeng(liujp@shanghaitech.edu.cn) ; Ye, Yu(ye_yu@pku.edu.cn) ; Han, Zheng(vitto.han@gmail.com) ; Chang, Kai(kchang@semi.ac.cn)
英文摘要Interfacing graphene with an antiferromagnetic insulator CrOCl enables the observation of strong interfacial coupling in the quantum Hall regime. The quantum Hall effect can be substantially affected by interfacial coupling between the host two-dimensional electron gases and the substrate, and has been predicted to give rise to exotic topological states. Yet the understanding of the underlying physics and the controllable engineering of this interaction remains challenging. Here we demonstrate the observation of an unusual quantum Hall effect, which differs markedly from that of the known picture, in graphene samples in contact with an antiferromagnetic insulator CrOCl equipped with dual gates. Two distinct quantum Hall phases are developed, with the Landau levels in monolayer graphene remaining intact at the conventional phase, but largely distorted for the interfacial-coupling phase. The latter quantum Hall phase is even present close to the absence of a magnetic field, with the consequential Landau quantization following a parabolic relation between the displacement field and the magnetic field. This characteristic prevails up to 100 K in a wide effective doping range from 0 to 10(13) cm(-2).
资助项目National Key R&D Program of China[2019YFA0307800] ; National Key R&D Program of China[2017YFA0303400] ; National Key R&D Program of China[2017YFA0206302] ; National Key R&D Program of China[2018YFA0306900] ; National Key R&D Program of China[2020YFA0309601] ; National Key R&D Program of China[2018YFA0306101] ; National Natural Science Foundation of China (NSFC)[92265203] ; National Natural Science Foundation of China (NSFC)[11974357] ; National Natural Science Foundation of China (NSFC)[U1932151] ; National Natural Science Foundation of China (NSFC)[52031014] ; National Natural Science Foundation of China (NSFC)[11974340] ; National Natural Science Foundation of China (NSFC)[12174257] ; National Natural Science Foundation of China (NSFC)[U21A6004] ; National Natural Science Foundation of China (NSFC)[12004228] ; National Natural Science Foundation of China (NSFC)[51627801] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB28000000] ; Chinese Academy of Sciences[QYZDJ-SSW-SYS001] ; Chinese Academy of Sciences[XDPB22] ; MEXT, Japan[JPMXP0112101001] ; JSPS KAKENHI[JP20H00354] ; JSPS
WOS研究方向Science & Technology - Other Topics ; Materials Science
语种英语
出版者NATURE PORTFOLIO
WOS记录号WOS:000886188900002
资助机构National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Chinese Academy of Sciences ; MEXT, Japan ; JSPS KAKENHI ; JSPS
源URL[http://ir.imr.ac.cn/handle/321006/176860]  
专题金属研究所_中国科学院金属研究所
通讯作者Mao, Jinhai; Liu, Jianpeng; Ye, Yu; Han, Zheng; Chang, Kai
作者单位1.Shanxi Univ, Inst Optoelect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China
3.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan, Peoples R China
4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
5.Liaoning Acad Mat, Shenyang, Peoples R China
6.Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China
7.Peking Univ, State Key Lab Mesoscop Phys, Sch Phys, Beijing, Peoples R China
8.Peking Univ, Frontiers Sci Ctr Nanooptoelect, Sch Phys, Beijing, Peoples R China
9.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China
10.ShanghaiTech Univ, ShanghaiTech Lab Topol Phys, Shanghai, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Yaning,Gao, Xiang,Yang, Kaining,et al. Quantum Hall phase in graphene engineered by interfacial charge coupling[J]. NATURE NANOTECHNOLOGY,2022:9.
APA Wang, Yaning.,Gao, Xiang.,Yang, Kaining.,Gu, Pingfan.,Lu, Xin.,...&Zhang, Zhidong.(2022).Quantum Hall phase in graphene engineered by interfacial charge coupling.NATURE NANOTECHNOLOGY,9.
MLA Wang, Yaning,et al."Quantum Hall phase in graphene engineered by interfacial charge coupling".NATURE NANOTECHNOLOGY (2022):9.

入库方式： OAI收割

来源：金属研究所

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