Domain wall induced topological Hall effect in the chiral-lattice ferromagnet Fe$_x$TaS$_2$
Abstract
Magnetic topology and its associated emergent phenomena are central to realizing intriguing quantum states and spintronics functionalities. Designing spin textures to achieve strong and distinct electrical responses remains a significant challenge. Layered transition metal dichalcogenides offer a versatile platform for tailoring structural and magnetic properties, enabling access to a wide spectrum of topological magnetic states. Here, we report a domain-wall-driven, large, and tunable topological Hall effect (THE) in a non-centrosymmetric intercalated transition metal dichalcogenides series FeTaS. By systematically varying the Fe intercalation level, we exert precise control over the magnetic ground states, allowing manipulation of the topological Hall effect. Real-space magnetic force microscopy (MFM) provides direct evidence of periodic magnetic stripe domain formation, confirming the microscopic origin of the observed topological transport phenomena. Our findings establish a promising way for tuning the topology of domains to generate substantial electromagnetic responses in layered magnetic materials.
Keywords
Cite
@article{arxiv.2510.20181,
title = {Domain wall induced topological Hall effect in the chiral-lattice ferromagnet Fe$_x$TaS$_2$},
author = {Sk Jamaluddin and Warit Nisaiyok and Yu Zhang and Hari Bhandari and Brian A. Francisco and Peter E. Siegfried and Fehmi Sami Yasin and Tianyi Wang and Abhijeet Nayak and Mohamed El Gazzah and Resham Babu Regmi and June Ho Yeo and Liuyan Zhao and J. F. Mitchell and Yong-Tao Cui and Nirmal J. Ghimire},
journal= {arXiv preprint arXiv:2510.20181},
year = {2025}
}