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  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., et al. (2019). Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs. Nature Communications, 10: 3478, pp. 1-7. doi:10.1038/s41467-019-11491-4.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-7826-B Version Permalink: http://hdl.handle.net/21.11116/0000-0004-7828-9
Genre: Journal Article

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 Creators:
Yang, H. F.1, Author
Yang, L. X.1, Author
Liu, Z. K.1, Author
Sun, Y.2, Author              
Chen, C.1, Author
Peng, H.1, Author
Schmidt, M.3, Author              
Prabhakaran, D.1, Author
Bernevig, B. A.1, Author
Felser, C.4, Author              
Yan, B. H.1, Author
Chen, Y. L.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863415              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: 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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Language(s): eng - English
 Dates: 2019-08-022019-08-02
 Publication Status: Published in print
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 10 Sequence Number: 3478 Start / End Page: 1 - 7 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723