Creating Majorana modes from segmented Fermi surface
Name
s41467-020-20690-3.pdf
Description
Published version
Size
1.05 MB
Format
Adobe PDF
Checksum (MD5)
314a2b389b7a4ca0de267e1f7215c2a9
Author(s)
Papaj, Michał
Fu, Liang
Date Issued
2021
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Citation
Papaj, Michał and Fu, Liang. 2021. "Creating Majorana modes from segmented Fermi surface." Nature Communications, 12 (1).
Version
Final published version
Abstract
© 2021, The Author(s). Majorana bound states provide a fertile ground for both investigation of fundamental phenomena as well as for applications in quantum computation. However, despite enormous experimental and theoretical efforts, the currently available Majorana platforms suffer from a multitude of issues that prevent full realization of their potential. Therefore, improved Majorana systems are still highly sought after. Here we present a platform for creating Majorana bound states from 2D gapless superconducting state in spin-helical systems under the in-plane magnetic or Zeeman field. Topological 1D channels are formed by quantum confinement of quasiparticles via Andreev reflection from the surrounding fully gapped superconducting region. Our proposal can be realized using narrow strips of magnetic insulators on top of proximitized 3D topological insulators. This setup has key advantages that include: small required fields, no necessity of fine-tuning of chemical potential, removal of the low-energy detrimental states, and large attainable topological gap.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/S41467-020-20690-3
