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We report the nanoscale conductivity imaging of correlated electronic statesin angle-aligned WSe2/WS2 heterostructures using microwave impedancemicroscopy. The noncontact microwave probe allows us to observe the Mottinsulating state with one hole per moir\'e unit cell that persists fortemperatures up to 150 K, consistent with other characterization techniques. Inaddition, we identify for the first time a Mott insulating state at oneelectron per moir\'e unit cell. Appreciable inhomogeneity of the correlatedstates is directly visualized in the hetero-bilayer region, indicative of localdisorders in the moir\'e superlattice potential or electrostatic doping. Ourwork provides important insights on 2D moir\'e systems down to the microscopiclevel.

Nanoscale Conductivity Imaging of Correlated Electronic States in WSe2/WS2 Moir\'e Superlattices