CalculationMode = td
FromScratch = yes
PeriodicDimensions = 3

Spacing = 0.5

%LatticeVectors
  0.0 | 0.5 | 0.5
  0.5 | 0.0 | 0.5
  0.5 | 0.5 | 0.0
%

a = 10.18
%LatticeParameters
 a | a | a
%

%ReducedCoordinates
 "Si" | 0.0 | 0.0 | 0.0
 "Si" | 1/4 | 1/4 | 1/4
%

nk = 2
%KPointsGrid
  nk |  nk |  nk
 0.5 | 0.5 | 0.5
 0.5 | 0.0 | 0.0
 0.0 | 0.5 | 0.0
 0.0 | 0.0 | 0.5
%
KPointsUseSymmetries = yes
%SymmetryBreakDir
  1 | 0 | 0
%

ExperimentalFeatures = yes

%TDExternalFields
 vector_potential | 1.0 | 0.0 | 0.0 | 0.0 | "envelope_step"
%

%TDFunctions
 "envelope_step" | tdf_from_expr | "0.01*step(t)"
%

%TDOutput
 total_current
%

TDTimeStep = 0.3
TDPropagationTime = 1500
TDExponentialMethod = lanczos
