Emergence of Chern metal in a moiré Kondo lattice.

A Chern metal emerges at the onset of magnetic Kondo breakdown in angle-aligned MoTe 2/WSe 2 moiré Kondo lattices, showing nearly quantized Hall response with finite longitudinal conduction.

• Why it matters: The work targets how band topology and Kondo interactions intertwine in frustrated moiré systems, where the magnetic Kondo breakdown is expected to reshape electronic states.
• What they did: Using nonlocal transport and current-induced quantum anomalous Hall breakdown, the authors identify chiral edge transport, while magnetic circular dichroism tracks a magnetization plateau before a metamagnetic transition.
• The result: The observed Chern metal is compressible and linked to the Kondo breakdown onset, enabling moiré engineering of topological phases governed by Kondo physics.

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