Zero-field Hall effect emerging from a non-Fermi liquid in a collinear antiferromagnet V1/3NbS2

Mayukh Kumar Ray, Mingxuan Fu, Youzhe Chen, Taishi Chen, Takuya Nomoto, Shiro Sakai, Motoharu Kitatani, Motoaki Hirayama, Shusaku Imajo, Takahiro Tomita, Akito Sakai, Daisuke Nishio-Hamane, Gregory T. McCandless, Michi-To Suzuki, Zhijun Xu, Yang Zhao, Tom Fennell, Yoshimitsu Kohama, Julia Y. Chan, Ryotaro Arita, Collin Broholm and Satoru Nakatsuji ()
Additional contact information
Mayukh Kumar Ray: University of Tokyo
Mingxuan Fu: University of Tokyo
Youzhe Chen: Johns Hopkins University
Taishi Chen: University of Tokyo
Takuya Nomoto: Tokyo Metropolitan University
Shiro Sakai: Hirosawa
Motoharu Kitatani: Hirosawa
Motoaki Hirayama: Hirosawa
Shusaku Imajo: University of Tokyo
Takahiro Tomita: University of Tokyo
Akito Sakai: University of Tokyo
Daisuke Nishio-Hamane: University of Tokyo
Gregory T. McCandless: Baylor University
Michi-To Suzuki: Osaka Metropolitan University
Zhijun Xu: National Institute of Standards and Technology
Yang Zhao: National Institute of Standards and Technology
Tom Fennell: PSI Center for Neutron and Muon Sciences
Yoshimitsu Kohama: University of Tokyo
Julia Y. Chan: Baylor University
Ryotaro Arita: University of Tokyo
Collin Broholm: Johns Hopkins University
Satoru Nakatsuji: University of Tokyo

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Magnetically intercalated transition metal dichalcogenides (TMDs) provide a versatile three-dimensional (3D) material platform to explore quantum phenomena and functionalities that emerge from an intricate interplay among magnetism, band structure, and electronic correlations. Here, we report the observation of a nearly magnetization-free anomalous Hall effect (AHE) accompanied by non-Fermi liquid (NFL) behavior and collinear antiferromagnetism (AFM) in V1/3NbS2. Our single-crystal neutron diffraction measurements identify a commensurate, collinear AFM order formed by intercalated V moments. In the magnetically ordered state, the spontaneous AHE is tenfold greater than expected from empirical scaling with magnetization, and this strongly enhanced AHE arises in the NFL regime that violates the quasiparticle picture. V1/3NbS2 challenges the existing single-particle framework for understanding AHEs based on one-body Berry curvature and highlights the potential of magnetically intercalated TMDs to unveil new electronic functionalities where many-body correlations play a critical role.

Date: 2025
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DOI: 10.1038/s41467-025-58476-0

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