Semiconductor-coupled superconducting junctions using NbN electrodes with high H-c2 and T-c

摘要

We investigated normal transport in a superconductor (S)-two-dimensional electron gas (2DEG)-superconductor(S) junction in the quantum Hall regime. Andreev reflection takes place between the two S-2DEG interfaces through the edge states. The differential resistance-bias voltage characteristics of the junction are strongly dependent on the Hall conductance regimes, that is, the plateau or the threshold regimes. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 6]