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Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs

Surface Fermi arcs (SFAs), the unique open Fermi-surfaces (FSs) discovered recently in topological Weyl semimetals (TWSs), are unlike closed FSs in conventional materials and can give rise to many exotic phenomena, such as anomalous SFA-mediated quantum oscillations, chiral magnetic effects, three-d...

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Autores principales: Yang, H. F., Yang, L. X., Liu, Z. K., Sun, Y., Chen, C., Peng, H., Schmidt, M., Prabhakaran, D., Bernevig, B. A., Felser, C., Yan, B. H., Chen, Y. L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6677823/
https://www.ncbi.nlm.nih.gov/pubmed/31375677
http://dx.doi.org/10.1038/s41467-019-11491-4
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author Yang, H. F.
Yang, L. X.
Liu, Z. K.
Sun, Y.
Chen, C.
Peng, H.
Schmidt, M.
Prabhakaran, D.
Bernevig, B. A.
Felser, C.
Yan, B. H.
Chen, Y. L.
author_facet Yang, H. F.
Yang, L. X.
Liu, Z. K.
Sun, Y.
Chen, C.
Peng, H.
Schmidt, M.
Prabhakaran, D.
Bernevig, B. A.
Felser, C.
Yan, B. H.
Chen, Y. L.
author_sort Yang, H. F.
collection PubMed
description Surface Fermi arcs (SFAs), the unique open Fermi-surfaces (FSs) discovered recently in topological Weyl semimetals (TWSs), are unlike closed FSs in conventional materials and can give rise to many exotic phenomena, such as anomalous SFA-mediated quantum oscillations, chiral magnetic effects, three-dimensional quantum Hall effect, non-local voltage generation and anomalous electromagnetic wave transmission. Here, by using in-situ surface decoration, we demonstrate successful manipulation of the shape, size and even the connections of SFAs in a model TWS, NbAs, and observe their evolution that leads to an unusual topological Lifshitz transition not caused by the change of the carrier concentration. The phase transition teleports the SFAs between different parts of the surface Brillouin zone. Despite the dramatic surface evolution, the existence of SFAs is robust and each SFA remains tied to a pair of Weyl points of opposite chirality, as dictated by the bulk topology.
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spelling pubmed-66778232019-08-05 Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs Yang, H. F. Yang, L. X. Liu, Z. K. Sun, Y. Chen, C. Peng, H. Schmidt, M. Prabhakaran, D. Bernevig, B. A. Felser, C. Yan, B. H. Chen, Y. L. Nat Commun Article Surface Fermi arcs (SFAs), the unique open Fermi-surfaces (FSs) discovered recently in topological Weyl semimetals (TWSs), are unlike closed FSs in conventional materials and can give rise to many exotic phenomena, such as anomalous SFA-mediated quantum oscillations, chiral magnetic effects, three-dimensional quantum Hall effect, non-local voltage generation and anomalous electromagnetic wave transmission. Here, by using in-situ surface decoration, we demonstrate successful manipulation of the shape, size and even the connections of SFAs in a model TWS, NbAs, and observe their evolution that leads to an unusual topological Lifshitz transition not caused by the change of the carrier concentration. The phase transition teleports the SFAs between different parts of the surface Brillouin zone. Despite the dramatic surface evolution, the existence of SFAs is robust and each SFA remains tied to a pair of Weyl points of opposite chirality, as dictated by the bulk topology. Nature Publishing Group UK 2019-08-02 /pmc/articles/PMC6677823/ /pubmed/31375677 http://dx.doi.org/10.1038/s41467-019-11491-4 Text en © The Author(s) 2019 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
Yang, H. F.
Yang, L. X.
Liu, Z. K.
Sun, Y.
Chen, C.
Peng, H.
Schmidt, M.
Prabhakaran, D.
Bernevig, B. A.
Felser, C.
Yan, B. H.
Chen, Y. L.
Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs
title Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs
title_full Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs
title_fullStr Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs
title_full_unstemmed Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs
title_short Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs
title_sort topological lifshitz transitions and fermi arc manipulation in weyl semimetal nbas
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6677823/
https://www.ncbi.nlm.nih.gov/pubmed/31375677
http://dx.doi.org/10.1038/s41467-019-11491-4
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