Cited by 326Topological Materials and Phenomena2D Materials and ApplicationsAdvanced Condensed Matter Physics

Observation of Fermi arcs in the type-II Weyl semimetal candidateWTe2

Open access
Wu, Yun, Mou, Daixiang, Jo, Na Hyun, Sun, Kewei, Huang, Lunan, Bud'ko, S. L., Canfield, P. C., Kaminski, Adam·2016·Physical Review B

Abstract

In recently predicted type-II Weyl semimetals, the Weyl states connect hole and electron bands that would otherwise be separated by an indirect gap. The set of points in the momentum space at which both bands touch are called Weyl points and are connected by Fermi arcs at the surface of the sample. Experimental evidence confirmed existence of these exotic fermions in MoTe${}_{2}$ and Mo${}_{x}$W${}_{1-x}$Te${}_{2}$. Here, the authors show that such states also exist in pure WTe${}_{2}$ and are very sensitive to strain. While flat undistorted portions of the sample show well defined Fermi arcs -- a clear signature of Weyl fermions -- strain due to bulking of the surface in other locations suppresses this state and destroys the Weyl state. Such high sensitivity to strain provides a simple way to tune properties of Weyl Fermions and explore the physics of these unusual objects.

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Crossref · 10.1103/physrevb.94.121113

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9 of 9 references verified0 citation errors · 0 not checkable

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  • These materials are zero-gap semiconductors, and their Weyl points are believed to be caused by external field-induced Zeeman splitting or by the exchange field from 4f electrons.

    “As mentioned in Section 3.3, these materials are zerogap semiconductors, and their Weyl points are believed to be caused by external field-induced Zeeman splitting (109) or by the exchange field from 4f electrons (110).”

    From Transport of Topological Semimetals (2019) · cites this paper as [110]

    The introduction (p. 1) discusses predicted Weyl points in WTe₂, and the summary (p. 4) reports Fermi arcs. Neither passage describes these materials as zero-gap semiconductors or attributes their Weyl points to Zeeman splitting or a 4f-electron exchange field; searches for both proposed mechanisms found no supporting passage in our copy. (LLM, conf=0.77)

    Experimental — accuracy not yet measured

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Cites

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Research works printed but not linked: 15

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Cited by

Sorted by citations

Authors
Wu, Y., Mou, D., Jo, N. H., Sun, K., Huang, L., Bud'ko, S. L., Canfield, P. C., & Kaminski, A.
Affiliations
Iowa State University (US)
Venue
Physical Review B
Published
2016-09-14
Volume
94
Issue
12
ISSN
  • 2469-9950 (ISSN-L)
  • 2469-9969
OpenAlex
W2341912168
Cited by
326
References
9
Citations by year
2026: 9 · 2025: 14 · 2024: 18 · 2023: 27 · 2022: 29 · 2021: 24 · 2020: 44 · 2019: 39 · 2018: 53 · 2017: 53 · 2016: 16
FWCI
25.38
Type
journal article
Language
en
Open access
Locations
  • Physical review. B./Physical review. B (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Iowa State University Digital Repository (Iowa State University) (submittedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • U.S. Department of Energy
  • Basic Energy Sciences
  • Iowa State University (DE-AC02-07CH11358)
  • Gordon and Betty Moore Foundation (GBMF4411)
  • National Science Foundation (DMR-1420451)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
Keywords
Fermi arcs, type-II Weyl semimetal, WTe2, Weyl points, Weyl fermions, strain sensitivity, MoTe2, topological surface states

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