In BN/graphene/PbI2 moiré superlattices, robust incompressible states at filling factor vh=0 and a fractional 2/3 e²/h plateau are observed and attributed to Chern junctions between moiré-modulated and conventional quantum Hall domains, with an unconventional Hofstadter spectrum linked to PbI2-prox-
Wannier, A result not dependent on rationality for bloch electrons in a magnetic field, physica status solidi (b) 88, 757 (1978)
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Chern junctions in Moir\'e-Patterned Graphene/PbI2
In BN/graphene/PbI2 moiré superlattices, robust incompressible states at filling factor vh=0 and a fractional 2/3 e²/h plateau are observed and attributed to Chern junctions between moiré-modulated and conventional quantum Hall domains, with an unconventional Hofstadter spectrum linked to PbI2-prox-