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TT: Fachverband Tiefe Temperaturen
TT 10: Topological Semimetals
TT 10.8: Vortrag
Montag, 17. März 2025, 17:00–17:15, H36
The Weyl-Mott point: Topological and non-Fermi liquid behavior from an isolated Green's function zero — •Rafael Alvaro Flores Calderon1 and Chris Hooley2 — 1Max Planck Institute for the Physics of Complex Systems, Noethnitzer Strasse 38, 01187 Dresden, Germany — 2Centre for Fluid and Complex Systems, Coventry University, Coventry CV1 2TT, United Kingdom
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.
Keywords: Non-Fermi liquids; Interacting Weyl semimetals; Green's function zeros; Chiral anomaly; topological Mott insulators