Altermagnetism in an interacting model of kagome materials
Phys. Rev. B 113, 165143 – Published 24 April, 2026
DOI: https://doi.org/10.1103/x7xc-dkk9
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 altermagnet found displays a characteristic magnon splitting, which can be detected in inelastic neutron scattering experiments on interacting kagome materials.
