Transport Properties of InAs/Nb Hybrid Junctions
Abstract
Controlled-transparency superconductor-semiconductor junctions have been fabricated in the Nb/n-InAs system by UHV thermal treatment and e-beam evaporation. Magnetotransport characterization at different temperatures will be presented showing for increasing junction transparency evolution of the differential conductance from Andreev pattern to appearance of a pronounced zero-bias anomaly. Experimental data are analyzed within Blonder-Tinkham-Klapwijk (BTK) theory showing that deviations commonly observed experimentally are linked to superconductor inhomogeneities and proximity effects.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 1998
- Bibcode:
- 1998APS..MAR.X3504G