Creating Majorana modes from segmented Fermi surface
Mesoscale and Nanoscale Physics
2021-03-17 v1
Abstract
We present a new platform for creating Majorana bound states from 2D gapless superconducting state in spin-helical systems under the in-plane 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 Zeeman fields, no required fine-tuning of chemical potential, removal of the low-energy detrimental states, and large attainable topological gap.
Keywords
Cite
@article{arxiv.2006.06651,
title = {Creating Majorana modes from segmented Fermi surface},
author = {Michał Papaj and Liang Fu},
journal= {arXiv preprint arXiv:2006.06651},
year = {2021}
}
Comments
6+3 pages, 4+1 figures