ANOMALOUS SUBHARMONIC GAP STRUCTURE IN MESOSCOPIC NB INAS/NB CONTACTS/

Authors
CHRESTIN A BIEDERMANN K MATSUYAMA T MERKT U
Citation
A. Chrestin et al., ANOMALOUS SUBHARMONIC GAP STRUCTURE IN MESOSCOPIC NB INAS/NB CONTACTS/, Czechoslovak journal of Physics, 46, 1996, pp. 2315-2316
Citations number
5
Categorie Soggetti
Physics
Journal title
Czechoslovak journal of Physics → ACNP
ISSN journal
00114626
Volume
46
Year of publication
1996
Supplement
4
Pages
2315 - 2316
Database
ISI
SICI code
0011-4626(1996)46:<2315:ASGSIM>2.0.ZU;2-V
Abstract
We have produced superconductor/semiconductor/superconductor weak link s with short normal conducting channels (greater than or equal to 20 n m), the two Nb electrodes being separated by an anodic oxide film. The normal conducting channel is the inversion layer at the surface of p- type InAs. The junctions show clear subharmonic gap structure, but the differential resistance peaks are splitted and their temperature depe ndence does not correspond to the one of the superconducting energy ga p.