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

R. Flores-Calderón1,2 and Chris Hooley3

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Phys. Rev. B 111, 235139 – Published 23 June, 2025

DOI: https://doi.org/10.1103/k4st-77ph

Abstract

We present a model in which a Hatsugai-Kohmoto interaction is added to a system of fermions with a Weyl point in their noninteracting 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 a 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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Phys. Rev. B 111, 235139– Published 23 June, 2025
  • Received 29 November 2024
  • Revised 9 April 2025
  • Accepted 10 June 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by Max Planck Society.

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