Dear Zafar, You are right.The negative frequecy is take care in QHA by Ghost_DOS.x i think.
On Thu, May 2, 2013 at 4:48 PM, zafar rasheed <zafartariq2003 at yahoo.com>wrote: > Dear Elias and Bramha Pandey > > NaN in *.QHA.out file appears due to some negative frequency. > Check your frequency file created in QHA run_me process. If negative > frequency is created then it mean that you have to run your phonon file > with a change in > tr2_ph=1.0d-10 to tr2_ph=1.0d-16 or any other negative number greater than > 10. > Hope that by this change negative frequency will not appear and you will > not get NaN message. > > Muhammad Zafar > PhD Scholar > Department of Physics > The Islamia University of Bahawalpur,Pakistan > _______________________________________________ > Pw_forum mailing list > Pw_forum at pwscf.org > http://pwscf.org/mailman/listinfo/pw_forum > -- Thanks and Regards Bramha Prasad Pandey Indian School of Mines(ISM) Dhanbad, INDIA. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pwscf.org/pipermail/pw_forum/attachments/20130502/0b18eefb/attachment.html
