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Electric-current control of anomalous Hall effect
Guo, Jianping, Brizolla, Gusthavo M. S., Rao, Peng, Shao, Jian, Meier, Thomas Norbert G., Xu, Tailai, Ji, Peirui, Finley, Jonathan, Fabian, Jaroslav
, Knolle, Johannes, Back, Christian
and Chen, Lin
(2026)
Electric-current control of anomalous Hall effect.
arXiv preprint.
(Submitted)
Date of publication of this fulltext: 14 Jan 2026 05:31
Article
DOI to cite this document: 10.5283/epub.78423
Abstract
We demonstrate robust and reversible electric-current control of the anomalous Hall effect (AHE) in a two-dimensional WTe₂/Fe₃GeTe₂ (FGT) stack. Applying a current through Td-WTe₂ leads to a giant modulation of the AHE of the adjacent FGT layer, with the relative change of the AHE conductivity exceeding 180%. Control experiments show that i) the observed effect is absent in pure FGT, ii) the ...
We demonstrate robust and reversible electric-current control of the anomalous Hall effect (AHE) in a two-dimensional WTe₂/Fe₃GeTe₂ (FGT) stack. Applying a current through Td-WTe₂ leads to a giant modulation of the AHE of the adjacent FGT layer, with the relative change of the AHE conductivity exceeding 180%. Control experiments show that i) the observed effect is absent in pure FGT, ii) the modulation weakens in thicker FGT films, confirming its interfacial origin, and iii) the modulation peaks for bilayer WTe₂, indicating that the Berry-curvature dipole (BCD) plays the dominant role in the modulation. We propose that the charge current I generates an out-of-plane magnetization Mz via BCD in WTe₂ and Mz modifies the exchange splitting of FGT via the inverse magnetic proximity effect, thereby altering its Berry curvature and nontrivially influencing the AHE. The demonstrated method of AHE control offers new possibilities for magnetism control, i.e., for the study of AHE-transistors as well as electric-current control of quantum magnets, especially magnetic insulators.
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| Item type | Article | ||||
| Journal or Publication Title | arXiv preprint | ||||
| Open Access Type: | OA-Version in anderem Repositorium | ||||
|---|---|---|---|---|---|
| Date | 7 January 2026 | ||||
| Institutions | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian | ||||
| Projects |
Funded by:
Deutsche Forschungsgemeinschaft (DFG)
(314695032)
| ||||
| Identification Number |
| ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Submitted | ||||
| Refereed | No, this version has not been refereed yet (as with preprints) | ||||
| Created at the University of Regensburg | Partially | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-784235 | ||||
| Item ID | 78423 |
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