In disordered QAH-superconductor junctions, a single chiral edge mode keeps perfect zero-bias transmission, while multiple chiral modes or an added metallic mode produce strong Andreev conversion and vanishing charge transmission.
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Disordered Quantum Transport in Quantum Anomalous Hall Insulator-Superconductor Junctions
In disordered QAH-superconductor junctions, a single chiral edge mode keeps perfect zero-bias transmission, while multiple chiral modes or an added metallic mode produce strong Andreev conversion and vanishing charge transmission.