Odd-parity magnetism by quantum geometry
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866908925324951552 |
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| author | Kudo, Kanta Yanase, Youichi |
| author_facet | Kudo, Kanta Yanase, Youichi |
| contents | We uncover a geometric mechanism of odd-parity multipole magnetism driven by the quantum metric of Bloch electrons. By analyzing spin and odd-parity multipole susceptibilities in a multi-sublattice model, we demonstrate that the quantum metric directly controls the instability toward odd-parity magnetic multipole order over a wide range of parameters, which condenses under Hubbard interaction. The resulting state exhibits complex magnetic correlations, as a hallmark of quantum-geometric magnetism. These results establish a geometric design principle for odd-parity multipole magnets and provide a route toward the experimental verification of quantum-geometric magnetism. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_20907 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Odd-parity magnetism by quantum geometry Kudo, Kanta Yanase, Youichi Strongly Correlated Electrons We uncover a geometric mechanism of odd-parity multipole magnetism driven by the quantum metric of Bloch electrons. By analyzing spin and odd-parity multipole susceptibilities in a multi-sublattice model, we demonstrate that the quantum metric directly controls the instability toward odd-parity magnetic multipole order over a wide range of parameters, which condenses under Hubbard interaction. The resulting state exhibits complex magnetic correlations, as a hallmark of quantum-geometric magnetism. These results establish a geometric design principle for odd-parity multipole magnets and provide a route toward the experimental verification of quantum-geometric magnetism. |
| title | Odd-parity magnetism by quantum geometry |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2505.20907 |