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Manipulatable Andreev reflection due to the interplay between the DIII-class topological and s-wave superconductors
- Source :
- Physica E: Low-dimensional Systems and Nanostructures. 101:278-283
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- We construct one mesoscopic circuit in which one quantum dot couples to one DIII-class topological superconductor and one s-wave superconductor, in addition to its connection with the metallic lead. And then, the Andreev reflection current in the metallic lead is evaluated. It is found that the two kinds of superconductors drive the Andreev reflection in the constructive manner. Next as finite superconducting phase difference is taken into account, the Andreev reflection oscillates in period π 2 , and it can be suppressed in the low-energy region if the superconducting phase difference is ( n + 1 2 ) π 2 (n ∈ Integer). Such a result is almost independent of the increase of the intradot Coulomb interaction. Therefore, this structure can assist to realize the manipulation of the Andreev reflection. Also, the result in this work provides useful information for understanding the property of the DIII-class topological superconductor.
- Subjects :
- Physics
Superconductivity
Mesoscopic physics
Structure (category theory)
02 engineering and technology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Condensed Matter Physics
Topology
01 natural sciences
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Andreev reflection
Connection (mathematics)
Quantum dot
Condensed Matter::Superconductivity
0103 physical sciences
S-wave
Coulomb
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 13869477
- Volume :
- 101
- Database :
- OpenAIRE
- Journal :
- Physica E: Low-dimensional Systems and Nanostructures
- Accession number :
- edsair.doi...........1bcfae8e838e72ba1509c652b32944ae