Altermagnons at the metal-insulator transition
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.
Authors
- Giorgio Sangiovanni (ORCID: https://orcid.org/0000-0003-2218-2901)
- Lennart Klebl (ORCID: https://orcid.org/0000-0002-5453-9779)
- Matteo Dürrnagel (ORCID: https://orcid.org/0000-0001-5799-4008)
- Niklas Witt (ORCID: https://orcid.org/0000-0002-2607-4986)
- Sarbajit Mazumdar (ORCID: https://orcid.org/0000-0002-1986-2896)
- Alena Lorenz (ORCID: https://orcid.org/0000-0001-6831-3685)
- Michael Klett (ORCID: https://orcid.org/0000-0002-2505-8976)
- Jannis Seufert (ORCID: https://orcid.org/0000-0003-2917-0487)
- Ronny Thomale (ORCID: https://orcid.org/0000-0002-3979-8836)
- Jonas Issing (ORCID: https://orcid.org/0009-0003-1955-6391)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2026-10-29
- DOI
- https://doi.org/10.1103/6lh2-q1jx
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Deutsche Forschungsgemeinschaft
- Studienstiftung des Deutschen Volkes