[Pw_forum] phonon dos of Fe

[Fang, Yuan]

Hey;
   Nowadays,I am calculating the phonon DOS of some elements.But I got some really strange result of Fe-bcc structure.I got some states with minus frequency. Attached is mu input file and output frequency file. Can someone help me find where the problem is.Thank you very much.
                               Y Fang

-------------- next part --------------
A non-text attachment was scrubbed...
Name: winmail.dat
Type: application/ms-tnef
Size: 36133 bytes
Desc: not available
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20100323/f573f822/attachment.bin>