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  • Letter

Giant field induced unconventional anomalous Hall conductivity in the noncentrosymmetric Weyl metal CeCoGe3

Zihao Shen, Lotte A. Borkowski, Anirudha Menon, Aaron Austin, Peter Klavins, Sergey Savrasov, and Valentin Taufour*

  • *Contact author: vtaufour@ucdavis.edu

Phys. Rev. B 113, L081107 – Published 19 February, 2026

DOI: https://doi.org/10.1103/5psl-z6xm

Abstract

Topological transport phenomena, such as transverse charge, spin, or thermoelectric effects, have attracted significant attention due to both fundamental challenges in their interpretation and their promising spintronic functionalities. Among the most studied phenomena is the anomalous Hall effect (AHE) which can arise from momentum-space or real-space Berry curvature. In most materials, the anomalous Hall response remains below 103S/cm, with larger values often attributed to extrinsic mechanisms. Here we show that CeCoGe3 exhibits a giant field-induced anomalous Hall conductivity (AHC) exceeding 105S/cm. We carefully evaluate the intrinsic and extrinsic contributions by comparing samples of different longitudinal conductivity. Remarkably, the intrinsic AHC is over an order of magnitude larger than that of other topological materials, and is the largest value reported to date. Our findings promote CeCoGe3, a noncentrosymmetric strongly correlated Kondo Weyl metal as a platform to study giant anomalous Hall responses.

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