| Interface-induced sign reversal of the anomalous Hall effect in magnetic topological insulator heterostructures | |
| Wang, Fei1,2,3; Wang, Xuepeng4,5; Zhao, Yi-Fan1; Xiao, Di1; Zhou, Ling-Jie1; Liu, Wei2; Zhang, Zhidong2; Zhao, Weiwei3; Chan, Moses H. W.1; Samarth, Nitin1; Liu, Chaoxing1; Zhang, Haijun4,5; Chang, Cui-Zu1 | |
| Corresponding Author | Zhang, Haijun(zhanghj@nju.edu.cn) ; Chang, Cui-Zu(cxc955@psu.edu) |
| 2021-01-04 | |
| Source Publication | NATURE COMMUNICATIONS
 |
| ISSN | 2041-1723 |
| Volume | 12Issue:1Pages:8 |
| Abstract | The Berry phase picture provides important insights into the electronic properties of condensed matter systems. The intrinsic anomalous Hall (AH) effect can be understood as the consequence of non-zero Berry curvature in momentum space. Here, we fabricate TI/magnetic TI heterostructures and find that the sign of the AH effect in the magnetic TI layer can be changed from being positive to negative with increasing the thickness of the top TI layer. Our first-principles calculations show that the built-in electric fields at the TI/magnetic TI interface influence the band structure of the magnetic TI layer, and thus lead to a reconstruction of the Berry curvature in the heterostructure samples. Based on the interface-induced AH effect with a negative sign in TI/V-doped TI bilayer structures, we create an artificial "topological Hall effect"-like feature in the Hall trace of the V-doped TI/TI/Cr-doped TI sandwich heterostructures. Our study provides a new route to create the Berry curvature change in magnetic topological materials that may lead to potential technological applications. Berry curvature connects to exotic electronic phases hence it provides important insights to understand quantum materials. Here, the authors report sign change of the anomalous Hall effect resulted from Berry curvature change at the interface of a topological insulator/magnetic topological insulator heterostructure. |
| Funding Organization | DOE ; ARO Young Investigator Program Award ; Gordon and Betty Moore Foundation's EPiQS Initiative ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Fok Ying-Tung Education Foundation of China ; Fundamental Research Funds for the Central Universities ; Penn State 2DCC-MIP under NSF ; Shenzhen Science and Technology Progam ; National Key R & D Program of China |
| DOI | 10.1038/s41467-020-20349-z |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | DOE[DE-SC0019064] ; ARO Young Investigator Program Award[W911NF1810198] ; Gordon and Betty Moore Foundation's EPiQS Initiative[GBMF9063] ; National Natural Science Foundation of China[11674165] ; National Natural Science Foundation of China[12074181] ; National Natural Science Foundation of China[11834006] ; National Natural Science Foundation of China[52073075] ; Natural Science Foundation of Jiangsu Province[BK20200007] ; Fok Ying-Tung Education Foundation of China[161006] ; Fundamental Research Funds for the Central Universities[020414380149] ; Penn State 2DCC-MIP under NSF[DMR-1539916] ; Shenzhen Science and Technology Progam[KQTD20170809110344233] ; National Key R & D Program of China[2017YFA0206302] |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| WOS ID | WOS:000665636000006 |
| Publisher | NATURE RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159913 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Haijun; Chang, Cui-Zu |
| Affiliation | 1.Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China 4.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China 5.Nanjing Univ, Sch Phys, Nanjing 210093, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Fei,Wang, Xuepeng,Zhao, Yi-Fan,et al. Interface-induced sign reversal of the anomalous Hall effect in magnetic topological insulator heterostructures[J]. NATURE COMMUNICATIONS,2021,12(1):8. |
| APA | Wang, Fei.,Wang, Xuepeng.,Zhao, Yi-Fan.,Xiao, Di.,Zhou, Ling-Jie.,...&Chang, Cui-Zu.(2021).Interface-induced sign reversal of the anomalous Hall effect in magnetic topological insulator heterostructures.NATURE COMMUNICATIONS,12(1),8. |
| MLA | Wang, Fei,et al."Interface-induced sign reversal of the anomalous Hall effect in magnetic topological insulator heterostructures".NATURE COMMUNICATIONS 12.1(2021):8. |
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