By precisely stacking two sheets of graphene at a specific angle, the resulting moiré superlattice superconducts. Extending this notion, researchers have now found superconductivity in four- and five-layer graphene moiré stacks.
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Sharpe, A.L. Stacks on stacks on stacks. Nat. Mater. 21, 842–843 (2022). https://doi.org/10.1038/s41563-022-01314-1
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DOI: https://doi.org/10.1038/s41563-022-01314-1