期刊
PHYSICAL REVIEW B
卷 94, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.94.121112
关键词
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资金
- Swiss National Science Foundation [200021-146995]
- Ambizione [PZ00P2_161327]
- Microsoft Research
- Swiss National Science Foundation
- Swiss National Science Foundation (SNF) [PZ00P2_161327] Funding Source: Swiss National Science Foundation (SNF)
We report angle-resolved photoemission experiments resolving the distinct electronic structure of the inequivalent top and bottom (001) surfaces of WTe2. On both surfaces, we identify a surface state that forms a large Fermi arc emerging out of the bulk electron pocket. Using surface electronic structure calculations, we show that these Fermi arcs are topologically trivial and that their existence is independent of the presence of type-IIWeyl points in the bulk band structure. This implies that the observation of surface Fermi arcs alone does not allow the identification of WTe2 as a topological Weyl semimetal. We further use the identification of the two different surfaces to clarify the number of Fermi surface sheets in WTe2.
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