Fig. 4: Topological surface states of SnIP. | npj Computational Materials

Fig. 4: Topological surface states of SnIP.

From: Degenerate topological line surface phonons in quasi-1D double helix crystal SnIP

Fig. 4

a Topological surface states of surface 1 along the (100) direction, as well as the surface arcs for phonon frequencies of b 6.410 THz, c 6.414 THz, d 6.415 THz and e 6.416 THz. f Topological surface states of surface 2 along the (100) direction, as well as the surface arcs for phonon frequencies of g 6.400 THz, h 6.410 THz, i 6.415 THz and j 6.420 THz.

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