| Autor: |
Jianlei Shen, Jiacheng Gao, Changjiang Yi, Meng Li, Shen Zhang, Jinying Yang, Binbin Wang, Min Zhou, Rongjin Huang, Hongxiang Wei, Haitao Yang, Youguo Shi, Xiaohong Xu, Hong-Jun Gao, Baogen Shen, Geng Li, Zhijun Wang, Enke Liu |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
The Innovation, Vol 4, Iss 2, Pp 100399- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2666-6758 |
| DOI: |
10.1016/j.xinn.2023.100399 |
| Popis: |
The modulation of topological electronic state by an external magnetic field is highly desired for condensed-matter physics. Schemes to achieve this have been proposed theoretically, but few can be realized experimentally. Here, combining transverse transport, theoretical calculations, and scanning tunneling microscopy/spectroscopy (STM/S) investigations, we provide an observation that the topological electronic state, accompanied by an emergent magneto-transport phenomenon, was modulated by applying magnetic field through induced non-collinear magnetism in the magnetic Weyl semimetal EuB6. A giant unconventional anomalous Hall effect (UAHE) is found during the magnetization re-orientation from easy axes to hard ones in magnetic field, with a UAHE peak around the low field of 5 kOe. Under the reasonable spin-canting effect, the folding of the topological anti-crossing bands occurs, generating a strong Berry curvature that accounts for the observed UAHE. Field-dependent STM/S reveals a highly synchronous evolution of electronic density of states, with a dI/dV peak around the same field of 5 kOe, which provides evidence to the folded bands and excited UAHE by external magnetic fields. This finding elucidates the connection between the real-space non-collinear magnetism and the k-space topological electronic state and establishes a novel manner to engineer the magneto-transport behaviors of correlated electrons for future topological spintronics. Public summary: • Modulation of Weyl electronic state by external field is highly desired. • Weyl electronic state and transverse transport are synchronously modulated. • Such modulation is realized by magnetic field-induced spin canting. • Non-collinear magnetism and topological electronic state can be connected. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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