Abstract
We propose a mechanism for insulating ferromagnetism in the honeycomb Hubbard model of semiconductor moiré superlattices. The ferromagnetism emerges at a critical charge transfer regime, stabilizing the quantum anomalous Hall state without Hund’s coupling. We further note the ferromagnetic exchange applies to general charge transfer systems when breaking particle-hole symmetry.
| Original language | English |
|---|---|
| Article number | L220408 |
| Pages (from-to) | 1-6 |
| Number of pages | 6 |
| Journal | Physical Review B |
| Volume | 112 |
| Issue number | 22 |
| DOIs | |
| State | Published - Dec 12 2025 |
| Externally published | Yes |