AI Article Synopsis
- The study investigates the relationship between strong correlations and Berry curvature in quantum materials, specifically focusing on the Kondo lattice ferromagnet USbTe.
- The researchers found that the anomalous Hall conductivity is largely influenced by intrinsic Berry curvature at low temperatures, challenging traditional scaling laws derived from Fermi liquid theory.
- Their findings suggest that the Kondo hybridization leads to flat bands at the Fermi level, significantly affecting the low-temperature properties linked to Berry curvature, indicating a need for revised theories in this area.
Article 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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9889341 | PMC |
| http://dx.doi.org/10.1038/s41467-023-36221-9 | DOI Listing |
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