Altermagnetic Anomalous Hall Effect Emerging from Electronic Correlations
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Contributors
Abstract
While altermagnetic materials are characterized by a vanishing net magnetic moment, their symmetry in principle allows for the existence of an anomalous Hall effect. Here, we introduce a model with altermagnetism in which the emergence of an anomalous Hall effect is driven by interactions. This model is grounded in a modified Kane-Mele framework with antiferromagnetic spin-spin correlations. Quantum Monte Carlo simulations show that the system undergoes a finite temperature phase transition governed by a primary antiferromagnetic order parameter accompanied by a secondary one of Haldane type. The emergence of both orders turns the metallic state of the system, away from half-filling, to an altermagnet with a finite anomalous Hall conductivity. A mean field ansatz corroborates these results, which pave the way into the study of correlation induced altermagnets with finite Berry curvature.
Details
| Original language | English |
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| Article number | 086503 |
| Journal | Physical review letters |
| Volume | 133 |
| Issue number | 8 |
| Publication status | Published - 23 Aug 2024 |
| Peer-reviewed | Yes |
External IDs
| PubMed | 39241719 |
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