| Issue |
EPL
Volume 92, Number 1, October 2010
|
|
|---|---|---|
| Article Number | 17001 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/92/17001 | |
| Published online | 19 October 2010 | |
Electric modulation of supercurrent in triplet Josephson junction
1
Department of Physics, Southeast University - Nanjing 210096, China
2
College of Science, Nanjing University of Post and Telecommunications - Nanjing 210096, China
Received:
3
August
2010
Accepted:
20
September
2010
We study the electric control of the Josephson current flowing in a clean triplet superconductor (TS) junction with a two-dimensional electron gas (2DEG) layer between two leads. The Rashba spin-orbit coupling (RSOC) is considered in the 2DEG region and its strength can be altered by an external electric field. Since the TS Cooper pairs can achieve a spin precession phase due to the pseudomagnetic field from RSOC when they travel in the 2DEG region, the Josephson current exhibits a regular 0-π oscillation, abrupt current reversal effect, and an unusual temperature dependence. Our findings may provide a purely electric means to control the Josephson current.
PACS: 74.45.+c – Proximity effects; Andreev reflection; SN and SNS junctions / 74.50.+r – Tunneling phenomena; Josephson effects
© EPLA, 2010
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