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A layered ferromagnet Cr2Te3 is attracting growing interest because of its unique electronic and magnetic properties. Studies have shown that it exhibits a sizable anomalous Hall effect (AHE) that changes sign with temperature. The origin of the AHE and the sign change, however, remains elusive. Here we show experimentally that electron-magnon scattering significantly contributes to the AHE in Cr2Te3 through magnon-induced skew scattering, and that the sign change is caused by the competition with the Berry-curvature or impurity-induced side-jump contribution. The electron-magnon skew scattering is expected to arise from the exchange interaction between the itinerant Te p-electrons and the localized Cr d-electrons modified by the strong spin-orbit coupling on Te. These results suggest that the magnon-induced skew scattering can dominate the AHE in layered ferromagnets with heavy elements.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: electron-magnon scattering

刊行年月日: 2025-06-20

出版者: Springer Nature

掲載誌:

• Communications Physics (ISSN: 23993650) vol. 8 issue. 1 262

研究助成金:

• MEXT | Japan Society for the Promotion of Science 23H00176
• MEXT | Japan Society for the Promotion of Science 23H05463
• MEXT | Japan Society for the Promotion of Science 22K18935
• MEXT | Japan Society for the Promotion of Science 22K14290
• MEXT | Japan Society for the Promotion of Science 21H01608
• MEXT | JST | Core Research for Evolutional Science and Technology JPMJCR19T3
• Ministry of Education, Culture, Sports, Science and Technology X-NICS
• MEXT | Japan Science and Technology Agency JPMJSP2108

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5541

公開URL: https://doi.org/10.1038/s42005-025-02186-y

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更新時刻: 2025-06-23 16:30:33 +0900

MDRでの公開時刻: 2025-06-23 16:20:57 +0900