[Pw_forum] dielectric functions in the region of GHz to THz

[Stefano Baroni]

Sorry for the wrong (incomplete) post, what I actually wanted to say is:

Stefano Baroni wrote:

> Well, it depends on the material. If the relevant elementary excitations
>  which determine the dielectric constant in that spectral region, 

 >>> ARE PHONONS,

> then
> PWscf+PHONON will certainly do. You'll have to calculate zone-center
> phonons + effective charges + static electronic dielectric constant, and
> look into a standard textbook how to obtain the diectric 

 >>> FUNCTION

> from
> the data so produced (it is very easy). For the time being, PWscf is
> unable to deal with any electronic contribution to the dynamic response.
> (it can calculate static response, though). Hope this helps. SB
> 
> Ichiro Nagano wrote:
> 
>>Dear PWscf users,
>>
>>It may be a trivial thing,
>>I would try to calculate dielectric functions in the region of GHz to THz.
>>Can we perform the calculation with PWscf?
>>
>>Thanks for any information,
>>
>>Ichiro Nagano
>>
>>********************************************************************
>>Advanced Technology Research Center, Mitsubishi Heavy Industries, Ltd.
>>8-1, Sachiura, 1-Chome, Kanazawa-ku, Yokohama, 236-8515, Japan
>>Ichiro Nagano
>>E-mail: <nagano at atrc.mhi.co.jp>
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> 
> 
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