Table 1 Parameters (eV) of the tight-binding Hamiltonian in Eq. (1)
From: Electric Field Controlled Indirect-Direct-Indirect Band Gap Transition in Monolayer InSe
\(\varepsilon _{\text {In}_{s}}\phantom {\dot {i}\!}\) | − 7.174 | \(\phantom {\dot {i}\!}\varepsilon _{\text {In}_{p_{x}}}=\varepsilon _{\text {In}_{p_{y}}}\) | − 2.302 |
\(\phantom {\dot {i}\!}\varepsilon _{\text {In}_{p_{z}}}\) | 1.248 | \(\phantom {\dot {i}\!}\varepsilon _{\text {Se}_{s}}\) | − 14.935 |
\(\phantom {\dot {i}\!}\varepsilon _{\text {Se}_{p_{x}}}=\varepsilon _{\text {Se}_{p_{y}}}\) | − 7.792 | \(\varepsilon _{\text {Se}_{p_{z}}}\phantom {\dot {i}\!}\) | − 7.362 |
\(T_{ss}^{(\text {In}-\text {Se})_{1}}\) | 0.168 | \(T_{sp}^{(\text {In}-\text {Se})_{1}}\) | 2.873 |
\(T_{ps}^{(\text {In}-\text {Se})_{1}}\) | − 2.144 | \(T_{\pi }^{(\text {In}-\text {Se})_{1}}\) | 1.041 |
\(T_{\sigma }^{(\text {In}-\text {Se})_{1}}\) | 1.691 | \(T_{ss}^{\text {In}-\text {In}}\) | − 0.200 |
\(T_{sp}^{\text {In}-\text {In}}\) | − 0.137 | \(T_{\pi }^{\text {In}-\text {In}}\) | − 0.433 |
\(T_{\sigma }^{\text {In}-\text {In}}\) | − 1.034 | \(T_{ss}^{\text {Se}-\text {Se}}\) | − 1.345 |
\(T_{sp}^{\text {Se}-\text {Se}}\) | − 0.800 | \(T_{\pi }^{\text {Se}-\text {Se}}\) | − 0.148 |
\(T_{\sigma }^{\text {Se}-\text {Se}}\) | − 0.554 | \(T_{ss}^{(\text {In}-\text {Se})_{2}}\) | 0.821 |
\(T_{sp}^{(\text {In}-\text {Se})_{2}}\) | 0.156 | \(T_{ps}^{(\text {In}-\text {Se})_{2}}\) | − 0.294 |
\(T_{\pi }^{(\text {In}-\text {Se})_{2}}\) | 0.003 | \(T_{\sigma }^{(\text {In}-\text {Se})_{2}}\) | − 0.455 |
\(T_{ss}^{({\text {In}-\text {In}})_{1}}\) | − 0.780 | \(T_{sp}^{({\text {In}-\text {In}})_{1}}\) | − 4.964 |
\(T_{\pi }^{({\text {In}-\text {In}})_{1}}\) | − 0.681 | \(T_{\sigma }^{({\text {In}-\text {In}})_{1}}\) | − 4.028 |
\(T_{ss}^{\text {In}-\text {Se}}\) | 0.574 | \(T_{sp}^{\text {In}-\text {Se}}\) | − 0.651 |
\(T_{ps}^{\text {In}-\text {Se}}\) | − 0.148 | \(T_{\pi }^{\text {In}-\text {Se}}\) | 0.100 |
\(T_{\sigma }^{\text {In}-\text {Se}}\) | 0.343 | \(T_{ss}^{({\text {In}-\text {In}})_{2}}\) | − 0.238 |
\(T_{sp}^{({\text {In}-\text {In}})_{2}}\) | − 0.048 | \(T_{\pi }^{({\text {In}-\text {In}})_{2}}\) | − 0.020 |
\(T_{\sigma }^{({\text {In}-\text {In}})_{2}}\) | − 0.151 |