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Creating Majorana modes from segmented Fermi surface
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...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7835351/ https://www.ncbi.nlm.nih.gov/pubmed/33495471 http://dx.doi.org/10.1038/s41467-020-20690-3 |
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author | Papaj, Michał Fu, Liang |
author_facet | Papaj, Michał Fu, Liang |
author_sort | Papaj, Michał |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-7835351 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-78353512021-01-29 Creating Majorana modes from segmented Fermi surface Papaj, Michał Fu, Liang Nat Commun Article 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. Nature Publishing Group UK 2021-01-25 /pmc/articles/PMC7835351/ /pubmed/33495471 http://dx.doi.org/10.1038/s41467-020-20690-3 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Papaj, Michał Fu, Liang Creating Majorana modes from segmented Fermi surface |
title | Creating Majorana modes from segmented Fermi surface |
title_full | Creating Majorana modes from segmented Fermi surface |
title_fullStr | Creating Majorana modes from segmented Fermi surface |
title_full_unstemmed | Creating Majorana modes from segmented Fermi surface |
title_short | Creating Majorana modes from segmented Fermi surface |
title_sort | creating majorana modes from segmented fermi surface |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7835351/ https://www.ncbi.nlm.nih.gov/pubmed/33495471 http://dx.doi.org/10.1038/s41467-020-20690-3 |
work_keys_str_mv | AT papajmichał creatingmajoranamodesfromsegmentedfermisurface AT fuliang creatingmajoranamodesfromsegmentedfermisurface |