[Pw_forum] Phonon DOS

[Paolo Giannozzi]

On Friday 30 May 2003 14:50, Subhradip Ghosh wrote:
> Hi,
>
> I am trying to compute Phonon DOS using the code matdyn.f90. I found that
> it worked for an insulator but in my case the system is metallic and while
> I ran the code there is some output generated alongwith an error message
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>      from matdyn : error #        -1
>      non-analytic term for q=0 missing !
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> [....] Is it a serious error or should I ignore it?

does the code calculate the correct phonon DOS? 
If yes, you should ignore this error message

Paolo

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Paolo Giannozzi             e-mail:  giannozz at nest.sns.it
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