[Pw_forum] Raman frquency calculation - reg.,

[Muthu V]

Dear Users

    I'm trying to calculation Raman and IR  frequencies with PHonon package
    included in QE. i want to know the prerequisites that i have to check ,
for
    example no of KPOINT in SCF run, asr typr in madyn calculation.
    Since i am getting negative value for frequecy as well as raman
intensity
    for my system. can any one help in this regard ?
    Thank you

    ==========================================

    Muthu V
    Sri Paramakalyani Colege
    Alwarkurichi

    ==========================================
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20160730/4160ef3c/attachment.html>