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Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field
Various promising qubit concepts have been put forward recently based on engineered superconductor subgap states like Andreev bound states, Majorana zero modes or the Yu-Shiba-Rusinov (Shiba) states. The coupling of these subgap states via a superconductor strongly depends on their spatial extension...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7156378/ https://www.ncbi.nlm.nih.gov/pubmed/32286260 http://dx.doi.org/10.1038/s41467-020-15322-9 |
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author | Scherübl, Zoltán Fülöp, Gergő Moca, Cătălin Paşcu Gramich, Jörg Baumgartner, Andreas Makk, Péter Elalaily, Tosson Schönenberger, Christian Nygård, Jesper Zaránd, Gergely Csonka, Szabolcs |
author_facet | Scherübl, Zoltán Fülöp, Gergő Moca, Cătălin Paşcu Gramich, Jörg Baumgartner, Andreas Makk, Péter Elalaily, Tosson Schönenberger, Christian Nygård, Jesper Zaránd, Gergely Csonka, Szabolcs |
author_sort | Scherübl, Zoltán |
collection | PubMed |
description | Various promising qubit concepts have been put forward recently based on engineered superconductor subgap states like Andreev bound states, Majorana zero modes or the Yu-Shiba-Rusinov (Shiba) states. The coupling of these subgap states via a superconductor strongly depends on their spatial extension and is an essential next step for future quantum technologies. Here we investigate the spatial extension of a Shiba state in a semiconductor quantum dot coupled to a superconductor. With detailed transport measurements and numerical renormalization group calculations we find a remarkable more than 50 nm extension of the zero energy Shiba state, much larger than the one observed in very recent scanning tunneling microscopy measurements. Moreover, we demonstrate that its spatial extension increases substantially in a magnetic field. |
format | Online Article Text |
id | pubmed-7156378 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-71563782020-04-22 Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field Scherübl, Zoltán Fülöp, Gergő Moca, Cătălin Paşcu Gramich, Jörg Baumgartner, Andreas Makk, Péter Elalaily, Tosson Schönenberger, Christian Nygård, Jesper Zaránd, Gergely Csonka, Szabolcs Nat Commun Article Various promising qubit concepts have been put forward recently based on engineered superconductor subgap states like Andreev bound states, Majorana zero modes or the Yu-Shiba-Rusinov (Shiba) states. The coupling of these subgap states via a superconductor strongly depends on their spatial extension and is an essential next step for future quantum technologies. Here we investigate the spatial extension of a Shiba state in a semiconductor quantum dot coupled to a superconductor. With detailed transport measurements and numerical renormalization group calculations we find a remarkable more than 50 nm extension of the zero energy Shiba state, much larger than the one observed in very recent scanning tunneling microscopy measurements. Moreover, we demonstrate that its spatial extension increases substantially in a magnetic field. Nature Publishing Group UK 2020-04-14 /pmc/articles/PMC7156378/ /pubmed/32286260 http://dx.doi.org/10.1038/s41467-020-15322-9 Text en © The Author(s) 2020 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 Scherübl, Zoltán Fülöp, Gergő Moca, Cătălin Paşcu Gramich, Jörg Baumgartner, Andreas Makk, Péter Elalaily, Tosson Schönenberger, Christian Nygård, Jesper Zaránd, Gergely Csonka, Szabolcs Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field |
title | Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field |
title_full | Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field |
title_fullStr | Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field |
title_full_unstemmed | Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field |
title_short | Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field |
title_sort | large spatial extension of the zero-energy yu–shiba–rusinov state in a magnetic field |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7156378/ https://www.ncbi.nlm.nih.gov/pubmed/32286260 http://dx.doi.org/10.1038/s41467-020-15322-9 |
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