Creating Majorana modes from segmented Fermi surface
Abstract
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.
- Authors:
-
[1];
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Northeastern Univ., Boston, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1816567
- Grant/Contract Number:
- SC0019275
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 12; Journal Issue: 1; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
Citation Formats
Papaj, Michał, and Fu, Liang. Creating Majorana modes from segmented Fermi surface. United States: N. p., 2021.
Web. doi:10.1038/s41467-020-20690-3.
Papaj, Michał, & Fu, Liang. Creating Majorana modes from segmented Fermi surface. United States. https://doi.org/10.1038/s41467-020-20690-3
Papaj, Michał, and Fu, Liang. Mon .
"Creating Majorana modes from segmented Fermi surface". United States. https://doi.org/10.1038/s41467-020-20690-3. https://www.osti.gov/servlets/purl/1816567.
@article{osti_1816567,
title = {Creating Majorana modes from segmented Fermi surface},
author = {Papaj, Michał and Fu, Liang},
abstractNote = {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.},
doi = {10.1038/s41467-020-20690-3},
journal = {Nature Communications},
number = 1,
volume = 12,
place = {United States},
year = {Mon Jan 25 00:00:00 EST 2021},
month = {Mon Jan 25 00:00:00 EST 2021}
}
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