--- En date de : Mer 26.8.15, Soumaia Djaadi <[email protected]> a écrit :

> De: Soumaia Djaadi <[email protected]>
> Objet: Re : optical properties
> À: [email protected]
> Date: Mercredi 26 août 2015, 22h35
> 
> 
>  
>  Hi Dear siesta user
>  I
> calculeted optical properties of Gen (n =
> 
> 2,8)clusters with siesta by annealing simulated method.
>  I obtained Gen.EPSIMG file for each
> clusters
>  but the the problem is Ge2.EPSIMG
> file has been generated to
>  e2.dat this last
> has been generated to  optical properties
> 
> (epsilon_real.out, epsilon_img.out,....  )but the rest
> of
>  the clusters Ge3, Ge4 ,.... are not
> being generated to
>  e2.dat and the terminal
> is print:
> 
> ..................................................
>    ##    0.0000000000000000       
>  136.03989999999999    
>  ## 
>          
>  1
> 
> ##   0.63890000000000002   
>  
>  ##    0.0000000000000000    
>  Fsum rule is not fulfilled by more than a 
>  20%
>  The dielectric function
> will be
>  extended
>  to higher
> energies by enforcing the
>  Fsum rule
>  This will increase the quality of
>  the quantities
>  calculated via
> the
>  Kramers-Kroning relation
> 
> .....................................................
>  and the part of optical properties
> calculation
>  in fdf is:
> 
> OpticalCalculation .true.
>  
> 
> %block  Optical.Mesh
>        20 20 20
>  %endblock 
>  Optical.Mesh
>  
>  Optical.OffsetMesh .true.
>  
>  Optical.PolarizationType
> unpolarized
>  %block  Optical.Vector
>     
>        1.0 0.0 0.0
>  %endblock 
>  Optical.Vector
>  
>  Optical.Broaden 0.2 eV
>  
>  Optical.EnergyMaximum  30.0
> eV
>  
> 
> Optical.EnergyMinimum  0.0
>  eV
>  
>  Can any one help me?
>  soumaia
>  
>  
>       
>

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