Unconventional ferroelectricity in moiré heterostructures

Nature, Published online: 23 November 2020; doi:10.1038/s41586-020-2970-9

Electronic ferroelectricity is observed in a graphene-based moiré heterostructure, which is explained using a spontaneous interlayer charge-transfer model driven by layer-specific on-site Coulomb repulsion.

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