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Broad and colossal edge supercurrent in Dirac semimetal Cd(3)As(2) Josephson junctions

Edge supercurrent has attracted great interest recently due to its crucial role in achieving and manipulating topological superconducting states. Proximity-induced superconductivity has been realized in quantum Hall and quantum spin Hall edge states, as well as in higher-order topological hinge stat...

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Autores principales: Chu, Chun-Guang, Chen, Jing-Jing, Wang, An-Qi, Tan, Zhen-Bing, Li, Cai-Zhen, Li, Chuan, Brinkman, Alexander, Xiang, Peng-Zhan, Li, Na, Pan, Zhen-Cun, Lu, Hai-Zhou, Yu, Dapeng, Liao, Zhi-Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10547728/
https://www.ncbi.nlm.nih.gov/pubmed/37788988
http://dx.doi.org/10.1038/s41467-023-41815-4
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author Chu, Chun-Guang
Chen, Jing-Jing
Wang, An-Qi
Tan, Zhen-Bing
Li, Cai-Zhen
Li, Chuan
Brinkman, Alexander
Xiang, Peng-Zhan
Li, Na
Pan, Zhen-Cun
Lu, Hai-Zhou
Yu, Dapeng
Liao, Zhi-Min
author_facet Chu, Chun-Guang
Chen, Jing-Jing
Wang, An-Qi
Tan, Zhen-Bing
Li, Cai-Zhen
Li, Chuan
Brinkman, Alexander
Xiang, Peng-Zhan
Li, Na
Pan, Zhen-Cun
Lu, Hai-Zhou
Yu, Dapeng
Liao, Zhi-Min
author_sort Chu, Chun-Guang
collection PubMed
description Edge supercurrent has attracted great interest recently due to its crucial role in achieving and manipulating topological superconducting states. Proximity-induced superconductivity has been realized in quantum Hall and quantum spin Hall edge states, as well as in higher-order topological hinge states. Non-Hermitian skin effect, the aggregation of non-Bloch eigenstates at open boundaries, promises an abnormal edge channel. Here we report the observation of broad edge supercurrent in Dirac semimetal Cd(3)As(2)-based Josephson junctions. The as-grown Cd(3)As(2) nanoplates are electron-doped by intrinsic defects, which enhance the non-Hermitian perturbations. The superconducting quantum interference indicates edge supercurrent with a width of ~1.6 μm and a magnitude of ~1 μA at 10 mK. The wide and large edge supercurrent is inaccessible for a conventional edge system and suggests the presence of non-Hermitian skin effect. A supercurrent nonlocality is also observed. The interplay between band topology and non-Hermiticity is beneficial for exploiting exotic topological matter.
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spelling pubmed-105477282023-10-05 Broad and colossal edge supercurrent in Dirac semimetal Cd(3)As(2) Josephson junctions Chu, Chun-Guang Chen, Jing-Jing Wang, An-Qi Tan, Zhen-Bing Li, Cai-Zhen Li, Chuan Brinkman, Alexander Xiang, Peng-Zhan Li, Na Pan, Zhen-Cun Lu, Hai-Zhou Yu, Dapeng Liao, Zhi-Min Nat Commun Article Edge supercurrent has attracted great interest recently due to its crucial role in achieving and manipulating topological superconducting states. Proximity-induced superconductivity has been realized in quantum Hall and quantum spin Hall edge states, as well as in higher-order topological hinge states. Non-Hermitian skin effect, the aggregation of non-Bloch eigenstates at open boundaries, promises an abnormal edge channel. Here we report the observation of broad edge supercurrent in Dirac semimetal Cd(3)As(2)-based Josephson junctions. The as-grown Cd(3)As(2) nanoplates are electron-doped by intrinsic defects, which enhance the non-Hermitian perturbations. The superconducting quantum interference indicates edge supercurrent with a width of ~1.6 μm and a magnitude of ~1 μA at 10 mK. The wide and large edge supercurrent is inaccessible for a conventional edge system and suggests the presence of non-Hermitian skin effect. A supercurrent nonlocality is also observed. The interplay between band topology and non-Hermiticity is beneficial for exploiting exotic topological matter. Nature Publishing Group UK 2023-10-03 /pmc/articles/PMC10547728/ /pubmed/37788988 http://dx.doi.org/10.1038/s41467-023-41815-4 Text en © The Author(s) 2023 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
Chu, Chun-Guang
Chen, Jing-Jing
Wang, An-Qi
Tan, Zhen-Bing
Li, Cai-Zhen
Li, Chuan
Brinkman, Alexander
Xiang, Peng-Zhan
Li, Na
Pan, Zhen-Cun
Lu, Hai-Zhou
Yu, Dapeng
Liao, Zhi-Min
Broad and colossal edge supercurrent in Dirac semimetal Cd(3)As(2) Josephson junctions
title Broad and colossal edge supercurrent in Dirac semimetal Cd(3)As(2) Josephson junctions
title_full Broad and colossal edge supercurrent in Dirac semimetal Cd(3)As(2) Josephson junctions
title_fullStr Broad and colossal edge supercurrent in Dirac semimetal Cd(3)As(2) Josephson junctions
title_full_unstemmed Broad and colossal edge supercurrent in Dirac semimetal Cd(3)As(2) Josephson junctions
title_short Broad and colossal edge supercurrent in Dirac semimetal Cd(3)As(2) Josephson junctions
title_sort broad and colossal edge supercurrent in dirac semimetal cd(3)as(2) josephson junctions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10547728/
https://www.ncbi.nlm.nih.gov/pubmed/37788988
http://dx.doi.org/10.1038/s41467-023-41815-4
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