Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa(4)

Magnetic topological semimetals allow for an effective control of the topological electronic states by tuning the spin configuration. Among them, Weyl nodal line semimetals are thought to have the greatest tunability, yet they are the least studied experimentally due to the scarcity of material cand...

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Autores principales: Lei, Shiming, Allen, Kevin, Huang, Jianwei, Moya, Jaime M., Wu, Tsz Chun, Casas, Brian, Zhang, Yichen, Oh, Ji Seop, Hashimoto, Makoto, Lu, Donghui, Denlinger, Jonathan, Jozwiak, Chris, Bostwick, Aaron, Rotenberg, Eli, Balicas, Luis, Birgeneau, Robert, Foster, Matthew S., Yi, Ming, Sun, Yan, Morosan, Emilia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10509256/
https://www.ncbi.nlm.nih.gov/pubmed/37726328
http://dx.doi.org/10.1038/s41467-023-40767-z
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author Lei, Shiming
Allen, Kevin
Huang, Jianwei
Moya, Jaime M.
Wu, Tsz Chun
Casas, Brian
Zhang, Yichen
Oh, Ji Seop
Hashimoto, Makoto
Lu, Donghui
Denlinger, Jonathan
Jozwiak, Chris
Bostwick, Aaron
Rotenberg, Eli
Balicas, Luis
Birgeneau, Robert
Foster, Matthew S.
Yi, Ming
Sun, Yan
Morosan, Emilia
author_facet Lei, Shiming
Allen, Kevin
Huang, Jianwei
Moya, Jaime M.
Wu, Tsz Chun
Casas, Brian
Zhang, Yichen
Oh, Ji Seop
Hashimoto, Makoto
Lu, Donghui
Denlinger, Jonathan
Jozwiak, Chris
Bostwick, Aaron
Rotenberg, Eli
Balicas, Luis
Birgeneau, Robert
Foster, Matthew S.
Yi, Ming
Sun, Yan
Morosan, Emilia
author_sort Lei, Shiming
collection PubMed
description Magnetic topological semimetals allow for an effective control of the topological electronic states by tuning the spin configuration. Among them, Weyl nodal line semimetals are thought to have the greatest tunability, yet they are the least studied experimentally due to the scarcity of material candidates. Here, using a combination of angle-resolved photoemission spectroscopy and quantum oscillation measurements, together with density functional theory calculations, we identify the square-net compound EuGa(4) as a magnetic Weyl nodal ring semimetal, in which the line nodes form closed rings near the Fermi level. The Weyl nodal ring states show distinct Landau quantization with clear spin splitting upon application of a magnetic field. At 2 K in a field of 14 T, the transverse magnetoresistance of EuGa(4) exceeds 200,000%, which is more than two orders of magnitude larger than that of other known magnetic topological semimetals. Our theoretical model suggests that the non-saturating magnetoresistance up to 40 T arises as a consequence of the nodal ring state.
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spelling pubmed-105092562023-09-21 Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa(4) Lei, Shiming Allen, Kevin Huang, Jianwei Moya, Jaime M. Wu, Tsz Chun Casas, Brian Zhang, Yichen Oh, Ji Seop Hashimoto, Makoto Lu, Donghui Denlinger, Jonathan Jozwiak, Chris Bostwick, Aaron Rotenberg, Eli Balicas, Luis Birgeneau, Robert Foster, Matthew S. Yi, Ming Sun, Yan Morosan, Emilia Nat Commun Article Magnetic topological semimetals allow for an effective control of the topological electronic states by tuning the spin configuration. Among them, Weyl nodal line semimetals are thought to have the greatest tunability, yet they are the least studied experimentally due to the scarcity of material candidates. Here, using a combination of angle-resolved photoemission spectroscopy and quantum oscillation measurements, together with density functional theory calculations, we identify the square-net compound EuGa(4) as a magnetic Weyl nodal ring semimetal, in which the line nodes form closed rings near the Fermi level. The Weyl nodal ring states show distinct Landau quantization with clear spin splitting upon application of a magnetic field. At 2 K in a field of 14 T, the transverse magnetoresistance of EuGa(4) exceeds 200,000%, which is more than two orders of magnitude larger than that of other known magnetic topological semimetals. Our theoretical model suggests that the non-saturating magnetoresistance up to 40 T arises as a consequence of the nodal ring state. Nature Publishing Group UK 2023-09-19 /pmc/articles/PMC10509256/ /pubmed/37726328 http://dx.doi.org/10.1038/s41467-023-40767-z 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Lei, Shiming
Allen, Kevin
Huang, Jianwei
Moya, Jaime M.
Wu, Tsz Chun
Casas, Brian
Zhang, Yichen
Oh, Ji Seop
Hashimoto, Makoto
Lu, Donghui
Denlinger, Jonathan
Jozwiak, Chris
Bostwick, Aaron
Rotenberg, Eli
Balicas, Luis
Birgeneau, Robert
Foster, Matthew S.
Yi, Ming
Sun, Yan
Morosan, Emilia
Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa(4)
title Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa(4)
title_full Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa(4)
title_fullStr Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa(4)
title_full_unstemmed Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa(4)
title_short Weyl nodal ring states and Landau quantization with very large magnetoresistance in square-net magnet EuGa(4)
title_sort weyl nodal ring states and landau quantization with very large magnetoresistance in square-net magnet euga(4)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10509256/
https://www.ncbi.nlm.nih.gov/pubmed/37726328
http://dx.doi.org/10.1038/s41467-023-40767-z
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