Creating Majorana modes from segmented Fermi surface
© 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...
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| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2022
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| Online Access: | https://hdl.handle.net/1721.1/141845 |
| _version_ | 1826198985090531328 |
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| author | Papaj, Michał Fu, Liang |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Papaj, Michał Fu, Liang |
| author_sort | Papaj, Michał |
| collection | MIT |
| description | © 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. |
| first_indexed | 2024-09-23T11:12:37Z |
| format | Article |
| id | mit-1721.1/141845 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:12:37Z |
| publishDate | 2022 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1418452023-01-23T20:51:16Z Creating Majorana modes from segmented Fermi surface Papaj, Michał Fu, Liang Massachusetts Institute of Technology. Department of Physics © 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. 2022-04-12T12:42:08Z 2022-04-12T12:42:08Z 2021 2022-04-12T12:38:03Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/141845 Papaj, Michał and Fu, Liang. 2021. "Creating Majorana modes from segmented Fermi surface." Nature Communications, 12 (1). en 10.1038/S41467-020-20690-3 Nature Communications Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Nature |
| spellingShingle | 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 |
| url | https://hdl.handle.net/1721.1/141845 |
| work_keys_str_mv | AT papajmichał creatingmajoranamodesfromsegmentedfermisurface AT fuliang creatingmajoranamodesfromsegmentedfermisurface |