Altermagnons at the metal-insulator transition
Strongly Correlated Electrons
2026-05-13 v1
Abstract
By means of slave-boson theory for the Hubbard model on the checkerboard lattice, we calculate dynamical altermagnetic spin susceptibilities from the metallic to the Mott-insulating regime. We track magnon dispersion and lifetime renormalization, allowing us to uncover a crossover from a chirality-selective dissipation of magnon modes to coherent yet strongly deformed chiral magnon branches across the metal insulator transition. Our formalism lends itself to a quantitative description of collective spin dynamics in correlated altermagnets.
Keywords
Cite
@article{arxiv.2605.11669,
title = {Altermagnons at the metal-insulator transition},
author = {Jonas Issing and Matteo Dürrnagel and Sarbajit Mazumdar and Alena Lorenz and Niklas Witt and Giorgio Sangiovanni and Michael Klett and Lennart Klebl and Ronny Thomale and Jannis Seufert},
journal= {arXiv preprint arXiv:2605.11669},
year = {2026}
}
Comments
17 pages, 8 figures, supplementary material