Altermagnons at the metal-insulator transition
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866911673319686144 |
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| author | Issing, Jonas Dürrnagel, Matteo Mazumdar, Sarbajit Lorenz, Alena Witt, Niklas Sangiovanni, Giorgio Klett, Michael Klebl, Lennart Thomale, Ronny Seufert, Jannis |
| author_facet | Issing, Jonas Dürrnagel, Matteo Mazumdar, Sarbajit Lorenz, Alena Witt, Niklas Sangiovanni, Giorgio Klett, Michael Klebl, Lennart Thomale, Ronny Seufert, Jannis |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_11669 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Altermagnons at the metal-insulator transition Issing, Jonas Dürrnagel, Matteo Mazumdar, Sarbajit Lorenz, Alena Witt, Niklas Sangiovanni, Giorgio Klett, Michael Klebl, Lennart Thomale, Ronny Seufert, Jannis Strongly Correlated Electrons 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. |
| title | Altermagnons at the metal-insulator transition |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2605.11669 |