Multi-Q spin-valley order in twisted WSe2
Abstract
We report on a study of the interacting phase diagram of 3.65°-twisted WSe 2 at moiré hole filling ν = 1, in which we find previously-overlooked types of magnetism. Specifically, in part of the phase diagram we obtain a magnetic order parameter which modulates in space with four different non-zero wave vectors, corresponding to the three M -points and one K -point of the moiré Brillouin zone. These multi-Q orders, which can be coplanar or non-coplanar, are continuous deformations of the 120° spin-valley anti-ferromagnet (AFM), where the unit cell has expanded by a factor of four. Interestingly, we find that the multi-Q states are stabilized for experimentally relevant values of interaction strength and displacement field, and are accompanied by a softening of the spin fluctuations near the M -points of the moiré Brillouin zone.
Fields of Study & Subjects
2D Materials and Applications
Inorganic Chemistry and Materials
Machine Learning in Materials Science
Publication details
- Journal / source
- npj Quantum Materials
- Publisher
- Springer Science and Business Media LLC
- Volume
- 11
- Issue
- 1
- Pages
- 58–58
- Publication date
- 24 April 2026
- Language
- EN