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research article
Experimental Observation and Spin Texture of Dirac Node Arcs in Tetradymite Topological Metals
May 14, 2021
We report the observation of a nontrivial spin texture in Dirac node arcs, i.e., novel topological objects formed when Dirac cones of massless particles extend along an open one-dimensional line in momentum space. We find that such states are present in all the compounds of the tetradymite M2Te2X family (M = Ti, Zr, or Hf and X = P or As) regardless of the weak or strong character of the topological invariant. The Dirac node arcs in tetradymites are thus the simplest possible textbook example of a type-I Dirac system with a single spin-polarized node arc.
Type
research article
Web of Science ID
WOS:000652838900003
Authors
Dai, J.
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Aryal, N.
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Chen, K-W
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Fortuna, F.
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Rault, J. E.
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Le Fevre, P.
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Balicas, L.
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Miyamoto, K.
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Okuda, T.
Publication date
2021-05-14
Publisher
Published in
Volume
126
Issue
19
Article Number
196407
Peer reviewed
REVIEWED
Written at
EPFL
EPFL units
Available on Infoscience
June 19, 2021
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