Strong proximity superconductivity persists in the flat-band limit of twisted bilayer graphene, with critical current decoupled from normal-state conductance and a Josephson diode effect in flat-band domes.
Kang et al., Dirac fermions and flat bands in the ideal kagome metal FeSn, Nat
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Probing the flat-band limit of the superconducting proximity effect in Twisted Bilayer Graphene Josephson junctions
Strong proximity superconductivity persists in the flat-band limit of twisted bilayer graphene, with critical current decoupled from normal-state conductance and a Josephson diode effect in flat-band domes.