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Interplay between correlations and Majorana mode in proximitized quantum dot

We study the low energy spectrum and transport properties of a correlated quantum dot coupled between normal and superconducting reservoirs and additionally hybridized with a topological superconducting nanowire, hosting the Majorana end-modes. In this setup the Majorana quasiparticle leaking into t...

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Autores principales: Górski, G., Barański, J., Weymann, I., Domański, T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6200813/
https://www.ncbi.nlm.nih.gov/pubmed/30356206
http://dx.doi.org/10.1038/s41598-018-33529-1
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author Górski, G.
Barański, J.
Weymann, I.
Domański, T.
author_facet Górski, G.
Barański, J.
Weymann, I.
Domański, T.
author_sort Górski, G.
collection PubMed
description We study the low energy spectrum and transport properties of a correlated quantum dot coupled between normal and superconducting reservoirs and additionally hybridized with a topological superconducting nanowire, hosting the Majorana end-modes. In this setup the Majorana quasiparticle leaking into the quantum dot can be confronted simultaneously with the on-dot pairing and correlations. We study this interplay, focusing on the quantum phase transition from the spinless (BCS-type) to the spinful (singly occupied) configuration, where the subgap Kondo effect may arise. Using the selfconsistent perturbative treatment for correlations and the unbiased numerical renormalization group calculations we find that the Majorana mode has either constructive or destructive effect on the low-energy transport behavior of the quantum dot, depending on its spin. This spin-selective influence could be verified by means of the polarized STM spectroscopy.
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spelling pubmed-62008132018-10-26 Interplay between correlations and Majorana mode in proximitized quantum dot Górski, G. Barański, J. Weymann, I. Domański, T. Sci Rep Article We study the low energy spectrum and transport properties of a correlated quantum dot coupled between normal and superconducting reservoirs and additionally hybridized with a topological superconducting nanowire, hosting the Majorana end-modes. In this setup the Majorana quasiparticle leaking into the quantum dot can be confronted simultaneously with the on-dot pairing and correlations. We study this interplay, focusing on the quantum phase transition from the spinless (BCS-type) to the spinful (singly occupied) configuration, where the subgap Kondo effect may arise. Using the selfconsistent perturbative treatment for correlations and the unbiased numerical renormalization group calculations we find that the Majorana mode has either constructive or destructive effect on the low-energy transport behavior of the quantum dot, depending on its spin. This spin-selective influence could be verified by means of the polarized STM spectroscopy. Nature Publishing Group UK 2018-10-24 /pmc/articles/PMC6200813/ /pubmed/30356206 http://dx.doi.org/10.1038/s41598-018-33529-1 Text en © The Author(s) 2018 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
Górski, G.
Barański, J.
Weymann, I.
Domański, T.
Interplay between correlations and Majorana mode in proximitized quantum dot
title Interplay between correlations and Majorana mode in proximitized quantum dot
title_full Interplay between correlations and Majorana mode in proximitized quantum dot
title_fullStr Interplay between correlations and Majorana mode in proximitized quantum dot
title_full_unstemmed Interplay between correlations and Majorana mode in proximitized quantum dot
title_short Interplay between correlations and Majorana mode in proximitized quantum dot
title_sort interplay between correlations and majorana mode in proximitized quantum dot
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6200813/
https://www.ncbi.nlm.nih.gov/pubmed/30356206
http://dx.doi.org/10.1038/s41598-018-33529-1
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