MIT News November 18, 2024
Based on the recent discovery of fractional quantum anomalous Hall states in moiré systems, researchers at MIT studied a family of moiré systems, skyrmion Chern band models, which could be realized in two-dimensional semiconductor-magnet heterostructures and capture the essence of twisted transition metal dichalcogenide homobilayers. Using many-body exact diagonalization they showed that, despite strong Berry curvature variations in momentum space, the non-Abelian Moore-Read state could be realized at half filling of the second miniband. According to the researchers, their results demonstrate the feasibility of non-Abelian fractionalization in moiré systems without Landau levels and shed light on the desirable conditions for their realization and highlight the prospect of realizing the Moore-Read state in twisted semiconductor bilayers… read more. Open Access TECHNICAL ARTICLEÂ
This illustration represents an emergent magnetic field felt by electrons in atomically thin layers of … Credit: Image courtesy of the Fu Lab.