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Figure 12
(a) Brillouin zone of the bulk and the (101) surface for YCd. The point A is the midpoint between Γ and R. The red circle denote the nodal line. (b) Projected spectrum on (101) surface. The red arrows point to the drumhead surface states.

IUCrJ
Volume 6| Part 4| July 2019| Pages 688-694
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519007383