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- Title
Coherent quantum transport in two-dimensional electron gas/superconductor double junctions with Rashba spin-orbit coupling.
- Authors
Bai, C.; Yang, Y.-L.; Zhang, X.-D.
- Abstract
Based on the extended Blonder-Tinkham-Klapwijk (BTK) approach, we have investigated the coherent quantum transport in two-dimensional electron gas/superconductor (2DEG/SC) double tunneling junctions in the presence of the Rashba spin-orbit coupling (RSOC). It is found that all the reflection coefficients in BTK theory as well as conductance spectra oscillate with the external voltage and energy. The oscillation feature of conductance can be tuned largely by the RSOC for low insulating barriers, while for high insulating barriers it is almost independent of the RSOC. These phenomena are essentially different from those found in ferromagnet/superconductor double tunneling junctions.
- Subjects
ELECTRON gas; SUPERCONDUCTORS; CRYOELECTRONICS; ELECTRONS; COUPLING constants
- Publication
European Physical Journal B: Condensed Matter, 2008, Vol 65, Issue 1, p79
- ISSN
1434-6028
- Publication type
Article
- DOI
10.1140/epjb/e2008-00321-8