Tunable Anomalous Hall Effect in a Kagomé Ferromagnetic Weyl Semimetal

Pate, Samuel E.; Wang, Bin; Zhang, Yang; Shen, Bing; Liu, Enke; Martin, Ivar; Jiang, J. Samuel; Zhou, Xiuquan; Chung, Duck Young; Kanatzidis, Mercouri G.; Welp, Ulrich; Kwok, Wai‐Kwong; Xiao, Zhi‐Li

doi:10.1002/advs.202406882

Tunable Anomalous Hall Effect in a Kagomé Ferromagnetic Weyl Semimetal

Journal Article · Thu Sep 26 00:00:00 EDT 2024 · Advanced Science

DOI:https://doi.org/10.1002/advs.202406882· OSTI ID:2588032

Pate, Samuel E. ^[1]; Wang, Bin ^[2]; ^[3]; Shen, Bing ^[2]; Liu, Enke ^[4]; Martin, Ivar ^[5]; Jiang, J. Samuel ^[5]; Zhou, Xiuquan ^[5]; Chung, Duck Young ^[5]; Kanatzidis, Mercouri G. ^[6]; Welp, Ulrich ^[5]; Kwok, Wai‐Kwong ^[5]; ^[1]

Argonne National Laboratory (ANL), Argonne, IL (United States); Northern Illinois University, DeKalb, IL (United States)
Sun Yat‐sen University, Guangzhou (China)
University of Tennessee, Knoxville, TN (United States)
Chinese Academy of Sciences, Beijing (China)
Argonne National Laboratory (ANL), Argonne, IL (United States)
Argonne National Laboratory (ANL), Argonne, IL (United States); Northwestern University, Evanston, IL (United States)

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 Co₃Sn₂S₂ with the magnetic Co atoms arranged on a kagomé lattice. Here it is reported that the AHE in Co₃Sn₂S₂ 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. Furthermore, these results also suggest a versatile way to tune the properties of a kagomé magnet.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: Applied Basic Research Foundation; National Key R&D Program of China; National Natural Sciences Foundation of China; National Science Foundation (NSF); USDOE

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 2588032

Journal Information:: Advanced Science, Journal Name: Advanced Science Journal Issue: 43 Vol. 11; ISSN 2198-3844

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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