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Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe(2)

Nonreciprocal transport refers to charge transfer processes that are sensitive to the bias polarity. Until recently, nonreciprocal transport was studied only in dissipative systems, where the nonreciprocal quantity is the resistance. Recent experiments have, however, demonstrated nonreciprocal super...

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Autores principales: Bauriedl, Lorenz, Bäuml, Christian, Fuchs, Lorenz, Baumgartner, Christian, Paulik, Nicolas, Bauer, Jonas M., Lin, Kai-Qiang, Lupton, John M., Taniguchi, Takashi, Watanabe, Kenji, Strunk, Christoph, Paradiso, Nicola
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9308774/
https://www.ncbi.nlm.nih.gov/pubmed/35871226
http://dx.doi.org/10.1038/s41467-022-31954-5
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author Bauriedl, Lorenz
Bäuml, Christian
Fuchs, Lorenz
Baumgartner, Christian
Paulik, Nicolas
Bauer, Jonas M.
Lin, Kai-Qiang
Lupton, John M.
Taniguchi, Takashi
Watanabe, Kenji
Strunk, Christoph
Paradiso, Nicola
author_facet Bauriedl, Lorenz
Bäuml, Christian
Fuchs, Lorenz
Baumgartner, Christian
Paulik, Nicolas
Bauer, Jonas M.
Lin, Kai-Qiang
Lupton, John M.
Taniguchi, Takashi
Watanabe, Kenji
Strunk, Christoph
Paradiso, Nicola
author_sort Bauriedl, Lorenz
collection PubMed
description Nonreciprocal transport refers to charge transfer processes that are sensitive to the bias polarity. Until recently, nonreciprocal transport was studied only in dissipative systems, where the nonreciprocal quantity is the resistance. Recent experiments have, however, demonstrated nonreciprocal supercurrent leading to the observation of a supercurrent diode effect in Rashba superconductors. Here we report on a supercurrent diode effect in NbSe(2) constrictions obtained by patterning NbSe(2) flakes with both even and odd layer number. The observed rectification is a consequence of the valley-Zeeman spin-orbit interaction. We demonstrate a rectification efficiency as large as 60%, considerably larger than the efficiency of devices based on Rashba superconductors. In agreement with recent theory for superconducting transition metal dichalcogenides, we show that the effect is driven by the out-of-plane component of the magnetic field. Remarkably, we find that the effect becomes field-asymmetric in the presence of an additional in-plane field component transverse to the current direction. Supercurrent diodes offer a further degree of freedom in designing superconducting quantum electronics with the high degree of integrability offered by van der Waals materials.
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spelling pubmed-93087742022-07-25 Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe(2) Bauriedl, Lorenz Bäuml, Christian Fuchs, Lorenz Baumgartner, Christian Paulik, Nicolas Bauer, Jonas M. Lin, Kai-Qiang Lupton, John M. Taniguchi, Takashi Watanabe, Kenji Strunk, Christoph Paradiso, Nicola Nat Commun Article Nonreciprocal transport refers to charge transfer processes that are sensitive to the bias polarity. Until recently, nonreciprocal transport was studied only in dissipative systems, where the nonreciprocal quantity is the resistance. Recent experiments have, however, demonstrated nonreciprocal supercurrent leading to the observation of a supercurrent diode effect in Rashba superconductors. Here we report on a supercurrent diode effect in NbSe(2) constrictions obtained by patterning NbSe(2) flakes with both even and odd layer number. The observed rectification is a consequence of the valley-Zeeman spin-orbit interaction. We demonstrate a rectification efficiency as large as 60%, considerably larger than the efficiency of devices based on Rashba superconductors. In agreement with recent theory for superconducting transition metal dichalcogenides, we show that the effect is driven by the out-of-plane component of the magnetic field. Remarkably, we find that the effect becomes field-asymmetric in the presence of an additional in-plane field component transverse to the current direction. Supercurrent diodes offer a further degree of freedom in designing superconducting quantum electronics with the high degree of integrability offered by van der Waals materials. Nature Publishing Group UK 2022-07-23 /pmc/articles/PMC9308774/ /pubmed/35871226 http://dx.doi.org/10.1038/s41467-022-31954-5 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Bauriedl, Lorenz
Bäuml, Christian
Fuchs, Lorenz
Baumgartner, Christian
Paulik, Nicolas
Bauer, Jonas M.
Lin, Kai-Qiang
Lupton, John M.
Taniguchi, Takashi
Watanabe, Kenji
Strunk, Christoph
Paradiso, Nicola
Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe(2)
title Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe(2)
title_full Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe(2)
title_fullStr Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe(2)
title_full_unstemmed Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe(2)
title_short Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe(2)
title_sort supercurrent diode effect and magnetochiral anisotropy in few-layer nbse(2)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9308774/
https://www.ncbi.nlm.nih.gov/pubmed/35871226
http://dx.doi.org/10.1038/s41467-022-31954-5
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