Table 1 Calculation of \({{\mathbb{Z}}}_{2}\) index for LaSb, LaBi and their heterostructure with LDA + SO and mBJLDA + SO functionals using Eq. 1.
LaSb | LaBi | LaSb/LaBi multilayer | |||||||
|---|---|---|---|---|---|---|---|---|---|
TRIM points | δ m | v 0 | TRIM points | δ m | v 0 | TRIM points | δ m | v 0 | |
with LDA + SO functional | 1Γ | − | 1 | ||||||
1A | + | ||||||||
1Γ | + | 1Γ | + | 1M | − | ||||
4L | + | 1 | 4L | + | 1 | 2R | + | ||
3X | − | 3X | − | 2X | + | ||||
1Z | − | ||||||||
with mBJLDA + SO functional | 1Γ | − | 1 | ||||||
1A | + | ||||||||
1Γ | + | 1Γ | + | 1M | − | ||||
4L | + | 0 | 4L | + | 1 | 2R | + | ||
3X | + | 3X | − | 2X | + | ||||
1Z | − | ||||||||
