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- Title
Tunneling characteristics of superconducting junctions with inhomogeneous tunnel barriers.
- Authors
Shaternik, V.; Shapovalov, A.; Belogolovskii, M.; Döring, S.; Schmidt, S.; Seidel, P.
- Abstract
The increasing interest in charge transport across amorphous nanometer-thick oxide layers is motivated by their promising applications in semiconductor and superconductor electronics. But usually, electrical characteristics of corresponding devices strongly differ from those following from a conventional theory of tunneling processes. In this work we discuss a possible reason of the anomalous behavior, namely, the presence of an universal bimodal distribution of transparencies across ultra-thin insulating films. We present low-temperature current-voltage characteristics of tunnel junctions with superconducting MoRe alloy electrodes separated by an inhomogeneous nano-scaled interlayer and found a good agreement between experimental data and numerical results of our theoretical approach.
- Subjects
CHARGE transfer; AMORPHOUS alloys; SUPERCONDUCTING junction devices; QUANTUM tunneling; SEMICONDUCTORS; SUPERCONDUCTORS; SEMICONDUCTOR junctions
- Publication
Materialwissenschaft und Werkstoffechnik, 2013, Vol 44, Issue 2/3, p205
- ISSN
0933-5137
- Publication type
Article
- DOI
10.1002/mawe.201300087