SOC
References: Hartwigsen1998
Switch on or off spin-orbit coupling. Use SOC parameters from non-local pseudopotentials as given in Hartwigsen, Goedecker, Hutter, Eq.(18), (19), [Hartwigsen1998], with \(V_{\mu\nu}^{\mathrm{SOC}, (\alpha)} = (\hbar/2) \langle \phi_\mu | \sum_l \Delta V_l^\mathrm{SO}(\mathbf{r},\mathbf{r}') L^{(\alpha)} | \phi_\nu \rangle, \alpha = x, y, z\). [Edit on GitHub]
Mentions: ⭐Band structure from GW
Keywords
Keyword descriptions
SECTION_PARAMETERS
Type: logical
Default: F
Lone keyword: T
Description: Controls the activation of the SOC calculation. [Edit on GitHub]
SOC_NBANDS_OCC
Type: integer
Default: -1
Usage: SOC_NBANDS_OCC 2000
Description: Truncate the second-variational SOC diagonalization to this many occupied bands below the Fermi level (per spin). Must be used together with SOC_NBANDS_VIRT. Default -1 = off. [Edit on GitHub]
SOC_NBANDS_VIRT
Type: integer
Default: -1
Usage: SOC_NBANDS_VIRT 2000
Description: Truncate the second-variational SOC diagonalization to this many virtual bands above the Fermi level (per spin). See SOC_NBANDS_OCC. Default -1 = off. [Edit on GitHub]
SOC_WINDOW_OCC
Type: real
Default: -2.72113839E+001 [eV]
Usage: SOC_WINDOW_OCC 5.0
Description: Apply SOC only for states with eigenvalues below VBM in the interval \([\varepsilon_\mathrm{VBM}-E_\mathrm{window\_occ}, \ \varepsilon_\mathrm{VBM}]\). to use for large systems to prevent numerical instabilities. [Edit on GitHub]
SOC_WINDOW_SMEARING
Type: real
Default: 1.00000000E+000 [eV]
Usage: SOC_WINDOW_SMEARING 1.0
Description: Width of the Fermi-like smoothing at the SOC energy-window edge. Default reproduces the value of 1 eV. only effective when at least one SOC window is active. [Edit on GitHub]
SOC_WINDOW_VIRT
Type: real
Default: -2.72113839E+001 [eV]
Usage: SOC_WINDOW_VIRT 5.0
Description: Apply SOC only for states with eigenvalues above CBM in the interval \([\varepsilon_\mathrm{CBM},\ \varepsilon_\mathrm{CBM}+E_\mathrm{window\_virt}]\), to use for large systems to prevent numerical instabilities. [Edit on GitHub]