Experimental Observation and Spin Texture of Dirac Node Arcs in Tetradymite Topological Metals
Journal Article
·
· Physical Review Letters
- Univ. Paris-Saclay, Orsay (France); Ecole Polytechnique Federale Lausanne (Switzerland)
- Univ. Paris-Saclay, Orsay (France)
- Florida State Univ., Tallahassee, FL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Florida State Univ., Tallahassee, FL (United States); Univ. of Michigan, Ann Arbor, MI (United States)
- Synchrotron SOLEIL, Gif-sur-Yvette (France)
- Florida State Univ., Tallahassee, FL (United States)
- Hiroshima Univ. (Japan)
- Florida State Univ., Tallahassee, FL (United States); National and Kapodistrian Univ. of Athens (Greece)
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. Finally, 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.
- Research Organization:
- Florida State Univ., Tallahassee, FL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0002613
- OSTI ID:
- 1820919
- Alternate ID(s):
- OSTI ID: 1782813
- Journal Information:
- Physical Review Letters, Vol. 126, Issue 19; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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