Tunable Anomalous Hall Effect in a Kagomé Ferromagnetic Weyl Semimetal
Emerging from the intricate interplay of topology and magnetism, the giant anomalous Hall effect (AHE) is the most known topological property of the recently discovered kagomé ferromagnetic Weyl semimetal Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub> with the magnetic Co atoms arranged on a kagomé lattice. Here it is reported that the AHE in Co<sub>3</sub>Sn<sub>2</sub>S<sub>2</sub> can be fine-tuned by an applied magnetic field orientated within ≈2° of the kagomé plane, while beyond this regime, it stays unchanged. Particularly, it can vanish in magnetic fields parallel to the kagomé plane and even decrease in magnetic fields collinear with the spin direction. This tunable AHE can be attributed to local spin switching enabled by the geometrical frustration of the magnetic kagomé lattice, revealing that spins in a kagomé ferromagnet change their switching behavior as the magnetic field approaches the kagomé plane. These results also suggest a versatile way to tune the properties of a kagomé magnet.
Authors
- Duck Young Chung (ORCID: https://orcid.org/0000-0002-1315-2631)
- Enke Liu (ORCID: https://orcid.org/0000-0002-5498-993X)
- J. S. Jiang (ORCID: https://orcid.org/0000-0002-1899-1872)
- Mercouri G. Kanatzidis (ORCID: https://orcid.org/0000-0003-2037-4168)
- Samuel E. Pate (ORCID: https://orcid.org/0000-0003-4172-2651)
- U. Welp (ORCID: https://orcid.org/0000-0001-5357-0363)
- Ivar Martin (ORCID: https://orcid.org/0000-0002-2010-6449)
- Bing Shen (ORCID: https://orcid.org/0000-0001-7977-6060)
- W. K. Kwok (ORCID: https://orcid.org/0000-0003-0030-084X)
- Xiuquan Zhou (ORCID: https://orcid.org/0000-0002-1361-3880)
- Zhili Xiao (ORCID: https://orcid.org/0000-0001-8012-2814)
- Yang Zhang (ORCID: https://orcid.org/0000-0003-4630-5056)
- Bin Wang (ORCID: https://orcid.org/0000-0002-1434-8142)
Institutions
- Northern Illinois University (US)
- Northwestern University (US)
- Argonne National Laboratory (US)
- Sun Yat-sen University (CN)
- Institute of Physics (CN)
- University of Tennessee at Knoxville (US)
Publication Details
- Journal
- Advanced Science
- Published
- 2024-09-26
- DOI
- https://doi.org/10.1002/advs.202406882
- Citations
- 1
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.34
Funders
- National Science Foundation
- U.S. Department of Energy
- University of Tennessee, Knoxville
- National Natural Science Foundation of China
- Office of Science
- National Key Research and Development Program of China
- Division of Materials Research
- Basic Energy Sciences