Example: Generating an Excited State with and Electron Hole¶
There is the possibility define the excitation of an electron from a low lying, localized band to a virtual band. The ElectronHole key does allow the specification of the original band and the spin of the electron. The EnforcedSpinPolarization key allows to restrict the spin polarization of the whole system.
"$ADFBIN/band" <<eor
UNITS
length Angstrom
angle Degree
END
Atoms
Si.frozen_core -0.67875 -0.67875 -0.67875
Si 0.67875 0.67875 0.67875
End
BasisDefaults
BasisType DZP
core none
Si.frozen_core BasisType=DZP core=Large
End
Lattice
0.000 2.715 2.715
2.715 0.000 2.715
2.715 2.715 0.000
End
XC
LDA SCF VWN
END
UNRESTRICTED
ElectronHole
BandIndex 1
SpinIndex 1
End
EnforcedSpinPolarization 0
end input
eor