[Pw_forum] Problem regarding raman calculation

[Stefano Baroni]

phonon modes are only Raman active at q=0 (more exactly, at very small  
q)
Exercise: WHY?
SB

PS: your e-mail contained several kbytes of (undeleted) garbage:  
please, take the time to remove them the next time you post


On Oct 9, 2008, at 7:57 AM, Arun Kumar Manna wrote:

>
>  Dear Users,
>           Is it possible to get raman tensors at k-points other that
>  gamma point?. If possibe, could you please tell me how to modify  
> $inputph
>  file for ph.x?.
>
>  Thanks
>   Arun


---
Stefano Baroni - SISSA  &  DEMOCRITOS National Simulation Center -  
Trieste
http://www.sissa.it/~baroni / [+39] 040 3787 406 (tel) -528 (fax) /  
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