Chi Shing Tsang

Oct 10, 2024 | science.org | Dimitri Fabrèges |Stephanie Hampton |Chi Shing Tsang |Xiaodong Zheng

Editor’s summaryObservations of electric fields in twisted molybdenum disulfide bilayers have revealed in-plane chiral vortex domains that depend on the twist angle. Tsang et al. used four-dimensional scanning transmission electron microscopy (TEM) and first-principles calculations to determine local polar domain structures, which may arise from twist stacking-induced charge redistribution and small in-plane ionic displacements. Mosaic chiral vortex patterns were seen for large twist angles.