New symmetry-broken Chern insulators with C = +3, ±2, ±1 at v = -2.5 or -2.6, plus the known C = -4 at v = -1, were observed in rhombohedral tetralayer graphene/hBN moiré superlattices and shown to be tunable via twist angle, electric field, and magnetic field.
Xu et al., Observation of Integer and Fractional Quantum Anomalous Hall Effects in Twisted Bilayer MoTe 2, Phys
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ARPES on tMoTe2 reveals non-monotonic hole effective mass versus twist angle peaking near 2 degrees, consistent with predicted magic-angle band flattening, plus doping-dependent band evolution confirming a direct gap.
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Tunable high-Chern-number Chern insulators in rhombohedral tetralayer graphene/hBN moir\'e superlattices
New symmetry-broken Chern insulators with C = +3, ±2, ±1 at v = -2.5 or -2.6, plus the known C = -4 at v = -1, were observed in rhombohedral tetralayer graphene/hBN moiré superlattices and shown to be tunable via twist angle, electric field, and magnetic field.
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Non-monotonic band flattening near the magic angle of twisted bilayer MoTe$_2$
ARPES on tMoTe2 reveals non-monotonic hole effective mass versus twist angle peaking near 2 degrees, consistent with predicted magic-angle band flattening, plus doping-dependent band evolution confirming a direct gap.