Coherent quantum transport in two-dimensional electron gas/superconductor double junctions with Rashba spin-orbit coupling

被引：0
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作者：
C. Bai
Y. -L. Yang
X. -D. Zhang
机构：
[1] Beijing Normal University,Department of Physics
来源：
The European Physical Journal B | 2008年 / 65卷
关键词：
73.23.-b Electronic transport in mesoscopic systems; 72.25.Mk Spin transport through interfaces; 74.50.+r Tunneling phenomena; point contacts, weak links, Josephson effects;
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摘要：
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.
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