Thermoelectric Detection of Crossed Andreev Reflections in Quantum Hall/Superconductor Hybrid Structures

Nature Communications, Published online: 05 June 2026; doi:10.1038/s41467-026-74064-2 The authors interface the quantum Hall edge modes of Cd3As2 films with a thin superconducting NbN strip. They find that the downstream thermoelectric response alternates in sign, revealing the contribution of crossed Andreev reflections.