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Transport in Nb-InAs structures: from phase coherence to the edge state regime

Eroms, Jonathan ; Weiss, Dieter


We investigated transport in Nb-InAs hybrid structures in perpendicular magnetic fields up to the quantum Hall regime. Due to the high contact quality of our samples, Andreev reflection dominates the transport properties in a range of experimental parameters. Our experiments were performed on periodic arrays of Nb filled stripes or antidots in an InAs-based 2DEG. According to geometry ...


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