Altermagnetism in an interacting model of Kagome materials

Abstract

The Hubbard model on the Kagome lattice is a widely used interacting model for describing the electronic properties of various transition metal-based Kagome materials. We find altermagnetism driven by Coulomb interaction in the Kagome Hubbard model at Dirac filling with no spin-orbit coupling nor explicit spatial symmetry breaking present. We show how this insulating altermagnet is relevant to other lattices with larger unit cells such as the Lieb-Kagome lattice. The ALM found displays a characteristic magnon splitting which can be detected in inelastic neutron scattering experiments on interacting Kagome materials.

7 pages, 4 figures, + Supplementary Material (7 pages, 5 figures)

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Cited by in corpus (1)

• Theory of Angle Resolved Photoemission Spectroscopy of Altermagnetic Mott Insulators