Article Significant electron-magnon scattering in layered ferromagnet Cr2Te3

Yujun Wang ORCID ; Shunzhen Wang ORCID ; Masashi Kawaguchi ORCID ; Jun Uzuhashi SAMURAI ORCID ; Akhilesh Kumar Patel SAMURAI ORCID ; Kenji Nawa ORCID ; Yuya Sakuraba SAMURAI ORCID ; Tadakatsu Ohkubo SAMURAI ORCID ; Hiroshi Kohno ORCID ; Masamitsu Hayashi SAMURAI ORCID

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Yujun Wang, Shunzhen Wang, Masashi Kawaguchi, Jun Uzuhashi, Akhilesh Kumar Patel, Kenji Nawa, Yuya Sakuraba, Tadakatsu Ohkubo, Hiroshi Kohno, Masamitsu Hayashi. Significant electron-magnon scattering in layered ferromagnet Cr2Te3. Communications Physics. 2025, 8 (1), 262. https://doi.org/10.1038/s42005-025-02186-y

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(abstract)

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.

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Keyword: electron-magnon scattering

Date published: 2025-06-20

Publisher: Springer Nature

Journal:

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

Funding:

  • 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

Manuscript type: Author's version (Accepted manuscript)

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

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

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Updated at: 2025-06-23 16:30:33 +0900

Published on MDR: 2025-06-23 16:20:57 +0900

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