Table 4 Tight-Binding Parameters for Monolayer of VA Elements (eV).
Element | N | P | As | Sb | Bi | ||||
|---|---|---|---|---|---|---|---|---|---|
No SOC | SOC | No SOC | SOC | No SOC | SOC | No SOC | SOC | ||
εs | −6.80 | −5.02 | −5.02 | −4.90 | −7.53 | −5.49 | −6.79 | −7.09 | −8.89 |
εp | −1.67 | −0.565 | −0.565 | −0.275 | −0.452 | −0.252 | −0.613 | −0.105 | −0.563 |
γss | −1.49 | −1.07 | −1.08 | −0.351 | −1.22 | −0.448 | −0.985 | −0.0515 | −0.864 |
γsp | 4.76 | 2.89 | 2.89 | 1.98 | 2.72 | 1.85 | 2.20 | 1.61 | 1.99 |
γppσ | −5.94 | −3.34 | −3.34 | −2.91 | −2.77 | −2.29 | −2.26 | −2.04 | −2.02 |
γppπ | 1.56 | 0.767 | 0.767 | 0.684 | 0.606 | 0.557 | 0.472 | 0.394 | 0.395 |
γ′ss | 0.216 | 0.260 | 0.261 | 0.0986 | −0.0529 | 0.0490 | −0.0735 | −0.0186 | −0.124 |
γ′sp | −0.0235 | −0.0562 | −0.0562 | −0.0637 | 0.179 | −0.0384 | 0.0280 | −0.0200 | −0.124 |
γ′ppσ | 1.38 | 1.15 | 1.15 | 0.858 | 0.786 | 0.653 | 0.646 | 0.535 | 0.551 |
γ′ppπ | −0.499 | −0.377 | −0.377 | −0.233 | −0.174 | −0.162 | −0.130 | −0.109 | −0.140 |
λI/10−3 | — | — | −0.141 | — | 0 | — | 1.97 | — | 0 |
λR/10−2 | — | — | 0.406 | — | 0 | — | 0.278 | — | 0 |
λOS | — | — | −0.0106 | — | −0.285 | — | −0.299 | — | −0.630 |