Breakdown of the scaling relation of anomalous Hall effect in Kondo lattice ferromagnet USbTe

Hasan Siddiquee, Christopher Broyles, Erica Kotta, Shouzheng Liu, Shiyu Peng, Tai Kong, Byungkyun Kang, Qiang Zhu, Yongbin Lee, Liqin Ke, Hongming Weng, Jonathan D. Denlinger, L. Andrew Wray and Sheng Ran ()
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Hasan Siddiquee: Washington University in St. Louis
Christopher Broyles: Washington University in St. Louis
Erica Kotta: New York University
Shouzheng Liu: New York University
Shiyu Peng: Chinese Academy of Sciences
Tai Kong: University of Arizona
Byungkyun Kang: University of Nevada
Qiang Zhu: University of Nevada
Yongbin Lee: Ames lab
Liqin Ke: Ames lab
Hongming Weng: Chinese Academy of Sciences
Jonathan D. Denlinger: Lawrence Berkeley National Laboratory
L. Andrew Wray: New York University
Sheng Ran: Washington University in St. Louis

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract The interaction between strong correlation and Berry curvature is an open territory of in the field of quantum materials. Here we report large anomalous Hall conductivity in a Kondo lattice ferromagnet USbTe which is dominated by intrinsic Berry curvature at low temperatures. However, the Berry curvature induced anomalous Hall effect does not follow the scaling relation derived from Fermi liquid theory. The onset of the Berry curvature contribution coincides with the Kondo coherent temperature. Combined with ARPES measurement and DMFT calculations, this strongly indicates that Berry curvature is hosted by the flat bands induced by Kondo hybridization at the Fermi level. Our results demonstrate that the Kondo coherence of the flat bands has a dramatic influence on the low temperature physical properties associated with the Berry curvature, calling for new theories of scaling relations of anomalous Hall effect to account for the interaction between strong correlation and Berry curvature.

Date: 2023
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DOI: 10.1038/s41467-023-36221-9

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