[gpaw-users] Intraband transitions

[Arto Sakko]

Dear All,

  I would like to calculate the optical properties of metallic systems 
with the DF module, but I have a problem with the intraband transitions: 
although they are included in principle, they do not seem to influence 
the photoabsorption spectrum. Intraband transitions should yield the 
Drude-type behaviour at low energies below the onset of interband 
transitions, but this effect seems to be missing. Can one use DF to 
simulate the dielectric response function of metals in a reliable way?

With best regards,
  Arto Sakko