Dears:
     There has optical properties module  in the siesta manual,i doubt whether 
it can calculate the material's dielectric constant and how?In the manual,it 
says ,optical calculation can obtained the imaginary part of the dielectric 
function,so i want to know how to write the fdf file.Further more,it can also 
use some comands to get the energy about the material,then ,how to combine the 
energy with frequency and analyse? I'm eagering to get  the examples in 
detail,thanks very much!
Best wishes!


At 2010-08-19 20:37:46,"Marcos Veríssimo Alves" 
<[email protected]> wrote:
Are you in doubt about the flags to use, or is it something more "conceptual"? 
In the former case, the flags are all listed in the manual.


Marcos


2010/8/19 water20064335<[email protected]>
Deras:
     I just want to known how to use the optical module in siesta? And whether 
the siesta can calculate the material's dielectric constant and how?



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