The impact of junction transparency in driving phase-coherent charge transfer across diffusive semiconductor-superconductor junctions is demonstrated. We present conductivity data for a set of Nb-InAs junctions differing only in interface transparency. Our experimental findings are analyzed within the quasiclassical Green’s-function approach and unambiguously show the physical processes giving rise to the observed excess zero-bias conductivity.
|Titolo:||Evidence of two-electron tunneling interference in Nb/InAs junctions|
|Data di pubblicazione:||1997|
|Parole Chiave:||superconductivity; hybrid junction|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1103/PhysRevB.62.9831|
|Appare nelle tipologie:||1.1 Articolo in rivista|