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Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS(2)
Topological superconductors (TSCs) are unconventional superconductors with bulk superconducting gap and in-gap Majorana states on the boundary that may be used as topological qubits for quantum computation. Despite their importance in both fundamental research and applications, natural TSCs are very...
Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8129086/ https://www.ncbi.nlm.nih.gov/pubmed/34001892 http://dx.doi.org/10.1038/s41467-021-23076-1 |
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author | Li, Y. W. Zheng, H. J. Fang, Y. Q. Zhang, D. Q. Chen, Y. J. Chen, C. Liang, A. J. Shi, W. J. Pei, D. Xu, L. X. Liu, S. Pan, J. Lu, D. H. Hashimoto, M. Barinov, A. Jung, S. W. Cacho, C. Wang, M. X. He, Y. Fu, L. Zhang, H. J. Huang, F. Q. Yang, L. X. Liu, Z. K. Chen, Y. L. |
author_facet | Li, Y. W. Zheng, H. J. Fang, Y. Q. Zhang, D. Q. Chen, Y. J. Chen, C. Liang, A. J. Shi, W. J. Pei, D. Xu, L. X. Liu, S. Pan, J. Lu, D. H. Hashimoto, M. Barinov, A. Jung, S. W. Cacho, C. Wang, M. X. He, Y. Fu, L. Zhang, H. J. Huang, F. Q. Yang, L. X. Liu, Z. K. Chen, Y. L. |
author_sort | Li, Y. W. |
collection | PubMed |
description | Topological superconductors (TSCs) are unconventional superconductors with bulk superconducting gap and in-gap Majorana states on the boundary that may be used as topological qubits for quantum computation. Despite their importance in both fundamental research and applications, natural TSCs are very rare. Here, combining state of the art synchrotron and laser-based angle-resolved photoemission spectroscopy, we investigated a stoichiometric transition metal dichalcogenide (TMD), 2M-WS(2) with a superconducting transition temperature of 8.8 K (the highest among all TMDs in the natural form up to date) and observed distinctive topological surface states (TSSs). Furthermore, in the superconducting state, we found that the TSSs acquired a nodeless superconducting gap with similar magnitude as that of the bulk states. These discoveries not only evidence 2M-WS(2) as an intrinsic TSC without the need of sensitive composition tuning or sophisticated heterostructures fabrication, but also provide an ideal platform for device applications thanks to its van der Waals layered structure. |
format | Online Article Text |
id | pubmed-8129086 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-81290862021-06-01 Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS(2) Li, Y. W. Zheng, H. J. Fang, Y. Q. Zhang, D. Q. Chen, Y. J. Chen, C. Liang, A. J. Shi, W. J. Pei, D. Xu, L. X. Liu, S. Pan, J. Lu, D. H. Hashimoto, M. Barinov, A. Jung, S. W. Cacho, C. Wang, M. X. He, Y. Fu, L. Zhang, H. J. Huang, F. Q. Yang, L. X. Liu, Z. K. Chen, Y. L. Nat Commun Article Topological superconductors (TSCs) are unconventional superconductors with bulk superconducting gap and in-gap Majorana states on the boundary that may be used as topological qubits for quantum computation. Despite their importance in both fundamental research and applications, natural TSCs are very rare. Here, combining state of the art synchrotron and laser-based angle-resolved photoemission spectroscopy, we investigated a stoichiometric transition metal dichalcogenide (TMD), 2M-WS(2) with a superconducting transition temperature of 8.8 K (the highest among all TMDs in the natural form up to date) and observed distinctive topological surface states (TSSs). Furthermore, in the superconducting state, we found that the TSSs acquired a nodeless superconducting gap with similar magnitude as that of the bulk states. These discoveries not only evidence 2M-WS(2) as an intrinsic TSC without the need of sensitive composition tuning or sophisticated heterostructures fabrication, but also provide an ideal platform for device applications thanks to its van der Waals layered structure. Nature Publishing Group UK 2021-05-17 /pmc/articles/PMC8129086/ /pubmed/34001892 http://dx.doi.org/10.1038/s41467-021-23076-1 Text en © The Author(s) 2021 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 Li, Y. W. Zheng, H. J. Fang, Y. Q. Zhang, D. Q. Chen, Y. J. Chen, C. Liang, A. J. Shi, W. J. Pei, D. Xu, L. X. Liu, S. Pan, J. Lu, D. H. Hashimoto, M. Barinov, A. Jung, S. W. Cacho, C. Wang, M. X. He, Y. Fu, L. Zhang, H. J. Huang, F. Q. Yang, L. X. Liu, Z. K. Chen, Y. L. Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS(2) |
title | Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS(2) |
title_full | Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS(2) |
title_fullStr | Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS(2) |
title_full_unstemmed | Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS(2) |
title_short | Observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2M-WS(2) |
title_sort | observation of topological superconductivity in a stoichiometric transition metal dichalcogenide 2m-ws(2) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8129086/ https://www.ncbi.nlm.nih.gov/pubmed/34001892 http://dx.doi.org/10.1038/s41467-021-23076-1 |
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