Academic Journal
Unconventional Anomalous Hall Effect Driven by Self‐Intercalation in Covalent 2D Magnet Cr 2 Te 3
| العنوان: | Unconventional Anomalous Hall Effect Driven by Self‐Intercalation in Covalent 2D Magnet Cr 2 Te 3 |
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| المؤلفون: | He, Keke, Bian, Mengying, Seddon, Samuel D., Jagadish, Koushik, Mucchietto, Andrea, Ren, He, Kirstein, Erik, Asadi, Reza, Bai, Jaeil, Yao, Chao, Pan, Sheng, Yu, Jie‐Xiang, Milde, Peter, Huai, Chang, Hui, Haolei, Zang, Jiadong, Sabirianov, Renat, Cheng, Xuemei M., Miao, Guoxing, Xing, Hui, Shao, Yu‐Tsun, Crooker, Scott A., Eng, Lukas, Hou, Yanglong, Bird, Jonathan P., Zeng, Hao |
| المساهمون: | National Science Foundation, National Key Research and Development Program of China, National Natural Science Foundation of China, Natural Sciences and Engineering Research Council of Canada, Basic Energy Sciences |
| المصدر: | Advanced Science ; volume 12, issue 2 ; ISSN 2198-3844 2198-3844 |
| بيانات النشر: | Wiley |
| سنة النشر: | 2024 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | Covalent 2D magnets such as Cr 2 Te 3 , which feature self‐intercalated magnetic cations located between monolayers of transition‐metal dichalcogenide material, offer a unique platform for controlling magnetic order and spin texture, enabling new potential applications for spintronic devices. Here, it is demonstrated that the unconventional anomalous Hall effect (AHE) in Cr 2 Te 3 , characterized by additional humps and dips near the coercive field in AHE hysteresis, originates from an intrinsic mechanism dictated by the self‐intercalation. This mechanism is distinctly different from previously proposed mechanisms such as topological Hall effect, or two‐channel AHE arising from spatial inhomogeneities. Crucially, multiple Weyl‐like nodes emerge in the electronic band structure due to strong spin‐orbit coupling, whose positions relative to the Fermi level is sensitively modulated by the canting angles of the self‐intercalated Cr cations. These nodes contribute strongly to the Berry curvature and AHE conductivity. This component competes with the contribution from bands that are less affected by the self‐intercalation, resulting in a sign change in AHE with temperature and the emergence of additional humps and dips. The findings provide compelling evidence for the intrinsic origin of the unconventional AHE in Cr 2 Te 3 and further establish self‐intercalation as a control knob for engineering AHE in complex magnets. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/advs.202407625 |
| الاتاحة: | https://doi.org/10.1002/advs.202407625 https://onlinelibrary.wiley.com/doi/pdf/10.1002/advs.202407625 |
| Rights: | http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.6B7E6C13 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/advs.202407625 |
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