Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Topological surface states and energy slices
(A, C, E, and G) Projected spectrum on the (010) and (100) surfaces without/with SOC in Na2CdSn, where the arrows represent the drumhead and Fermi arc surface states of the quadratic nodal line and Dirac point.
(B, D, F, and H) The slices under different energy values (−0.4 to 0.4 eV).
