Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal
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...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | The Innovation |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666675823000279 |
| _version_ | 1827999048082128896 |
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| author | 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 |
| author_facet | 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 |
| author_sort | Jianlei Shen |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-10T05:53:05Z |
| format | Article |
| id | doaj.art-97564ab1a780413fb15adbbeecf94be3 |
| institution | Directory Open Access Journal |
| issn | 2666-6758 |
| language | English |
| last_indexed | 2024-04-10T05:53:05Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | The Innovation |
| spelling | doaj.art-97564ab1a780413fb15adbbeecf94be32023-03-04T04:23:59ZengElsevierThe Innovation2666-67582023-03-0142100399Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetalJianlei Shen0Jiacheng Gao1Changjiang Yi2Meng Li3Shen Zhang4Jinying Yang5Binbin Wang6Min Zhou7Rongjin Huang8Hongxiang Wei9Haitao Yang10Youguo Shi11Xiaohong Xu12Hong-Jun Gao13Baogen Shen14Geng Li15Zhijun Wang16Enke Liu17Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & Research Institute of Materials Science, Shanxi Normal University, Taiyuan 030000, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Songshan Lake Materials Laboratory, Dongguan 523808, ChinaKey Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & Research Institute of Materials Science, Shanxi Normal University, Taiyuan 030000, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Songshan Lake Materials Laboratory, Dongguan 523808, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341000, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Songshan Lake Materials Laboratory, Dongguan 523808, China; Corresponding authorBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding authorBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Songshan Lake Materials Laboratory, Dongguan 523808, China; Corresponding authorThe 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.http://www.sciencedirect.com/science/article/pii/S2666675823000279 |
| spellingShingle | 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 Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal The Innovation |
| title | Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal |
| title_full | Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal |
| title_fullStr | Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal |
| title_full_unstemmed | Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal |
| title_short | Magnetic-field modulation of topological electronic state and emergent magneto-transport in a magnetic Weyl semimetal |
| title_sort | magnetic field modulation of topological electronic state and emergent magneto transport in a magnetic weyl semimetal |
| url | http://www.sciencedirect.com/science/article/pii/S2666675823000279 |
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