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arXiv · 2410.22173

The Weyl-Mott point: topological and non-Fermi liquid behavior from an isolated Green's function zero

R. Flores-Calderón·C. Hooley
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Abstract

We present a model in which a Hatsugai-Kohmoto interaction is added to a system of fermions with a Weyl point in their non-interacting dispersion relation, and analyze its behavior as a function of the chemical potential. We show that the model exhibits a Weyl-Mott point -- a single isolated Green's function zero -- and that this implies an emergent non-Fermi-liquid state at the border of the metallic regime and a gapped topological state for the insulating one. The Weyl-Mott point inherits the topological charge from the original Green's function pole, and is therefore naturally associated with a strongly correlated chiral anomaly.

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R. Flores-Calderón, C. Hooley. 2024-10-29. The Weyl-Mott point: topological and non-Fermi liquid behavior from an isolated Green's function zero. https://doi.org/10.1103/k4st-77ph

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