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Spin-Pairing Correlations and Spin Polarization of Majorana Bound States in Two-Dimensional Topological Insulator Systems
- Publication Year :
- 2016
- Publisher :
- arXiv, 2016.
-
Abstract
- We demonstrate that zero-energy Majorana bound state, in the ferromagnetic insulator (FI)-superconductor (SC) junction formed on the edge of two-dimensional topological insulator, exhibits three types of spin-triplet pairing correlations and its spin polarization direction is position independent in ferromagnetic insulator. When an electron is injected with a spin (anti-)parallel to this direction, equal-spin Andreev reflection exhibits the widest (narrowest) resonance peak. Similar behaviour is found when the coupling between two Majorana bound states in a FI-SC-FI junction is invoked, though an additional weak spin-singlet pairing correlation is generated. These signatures can readily facilitate the experimental detection of spin-triplet correlations and spin polarization of Majorana bound states.<br />Comment: 5 pages, 5 figures
- Subjects :
- Superconductivity
Physics
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed matter physics
Spin polarization
FOS: Physical sciences
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Andreev reflection
MAJORANA
Ferromagnetism
Condensed Matter::Superconductivity
Topological insulator
Pairing
0103 physical sciences
Bound state
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Condensed Matter::Strongly Correlated Electrons
010306 general physics
0210 nano-technology
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....c08928c823b12c388e87e077478daa43
- Full Text :
- https://doi.org/10.48550/arxiv.1612.09127