Scientists at the University of Hong Kong and Hunan Normal University showed that, in homobilayer transition metal dichalcogenides, the real-space Berry phase from moiré patterns manifests as a periodic magnetic field. The field magnitude can reach hundreds of Tesla for a typical moiré period of 10 nanometers. For low energy carriers, this Berry phase induced magnetic field realizes a topological flux lattice for the quantum spin Hall effect.
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Source: Phys.org