Discovery of a Weyl fermion semimetal and topological Fermi arcs

  title={Discovery of a Weyl fermion semimetal and topological Fermi arcs},
  author={S. Xu and I. Belopolski and N. Alidoust and M. Neupane and G. Bian and C. Zhang and R. Sankar and G. Chang and Z. Yuan and Chi-Cheng Lee and S. Huang and Hao Zheng and Jie Ma and D. S{\'a}nchez and B. Wang and A. Bansil and F. Chou and P. Shibayev and H. Lin and S. Jia and M Zahid Hasan},
  pages={613 - 617}
  • S. Xu, I. Belopolski, +18 authors M Zahid Hasan
  • Published 2015
  • Physics, Medicine
  • Science
  • Weyl physics emerges in the laboratory Weyl fermions—massless particles with half-integer spin—were once mistakenly thought to describe neutrinos. Although not yet observed among elementary particles, Weyl fermions may exist as collective excitations in so-called Weyl semimetals. These materials have an unusual band structure in which the linearly dispersing valence and conduction bands meet at discrete “Weyl points.” Xu et al. used photoemission spectroscopy to identify TaAs as a Weyl… CONTINUE READING
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