[Wien] Question about criteria for adding intraband contribution in optical property calculation

[shamik chakrabarti]

Dear Rocquefelte,

         Thank you very much Sir for your response. It has solved our
problem.

with regards,


On Thu, Jun 6, 2013 at 4:11 PM, Rocquefelte
<xavier.rocquefelte at cnrs-imn.fr>wrote:

>  You need to consider intraband transitions only if the Fermi level is
> crossing a band.
> If you are considering semiconducting materials, you are not in this
> situation.
> Thus you should not include the intraband transitions, because there is no
> intraband transitions, as soon as you have a band gap separating the VB and
> the CB.
>
> Regards
>
> Xavier
>
>
> Le 6/6/2013 4:25 AM, shamik chakrabarti a écrit :
>
> Dear Wien2k users,
>
>         I have a basic question regarding calculation of optical
> properties of a semiconducting material. My question is:
>
>  When we should add contribution of intraband transition to the
> calculation of dielectric tensor?...i.e. if there is any thumb rule that
> for certain cases (non metal) we can neglect intraband transitions or is it
> always necessary to add it??
>
>  Any response in this regard will be very helpful for us.
>
>  with regards,
>
>  --
> Shamik Chakrabarti
> Senior Research Fellow
> Dept. of Physics & Meteorology
> Material Processing & Solid State Ionics Lab
> IIT Kharagpur
> Kharagpur 721302
> INDIA
>
>
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-- 
Shamik Chakrabarti
Senior Research Fellow
Dept. of Physics & Meteorology
Material Processing & Solid State Ionics Lab
IIT Kharagpur
Kharagpur 721302
INDIA
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