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Manipulation of Andreev reflections in the single-dot quantum ring with one side-coupled superconductor
- Source :
- Journal of Physics D: Applied Physics. 52:305303
- Publication Year :
- 2019
- Publisher :
- IOP Publishing, 2019.
-
Abstract
- We investigate the Andreev reflections in a single-dot quantum ring with one s-wave superconductor side-coupled to the quantum dot, by considering the presence of local Rashba interaction and magnetic flux. It shows that in this system, the local Rashba interaction induces apparent spin polarizations of the local Andreev reflections, with their directions depending on the Rashba interaction and the lead index, respectively. Nevertheless, the crossed Andreev reflection cannot be polarized, and its magnitude can be adjusted by the threaded local magnetic flux. We propose this structure to be the promising candidate for achieving the manipulation of Andreev reflections.
- Subjects :
- Physics
Superconductivity
Acoustics and Ultrasonics
Spin polarization
Condensed matter physics
02 engineering and technology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Magnetic flux
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Andreev reflection
Reflection (mathematics)
Quantum dot
Condensed Matter::Superconductivity
0103 physical sciences
010306 general physics
0210 nano-technology
Quantum
Spin-½
Subjects
Details
- ISSN :
- 13616463 and 00223727
- Volume :
- 52
- Database :
- OpenAIRE
- Journal :
- Journal of Physics D: Applied Physics
- Accession number :
- edsair.doi...........061568306d09132f8e1df2ea9d6c5803