[Pw_forum] About the flattening of phonon branches

Reza Ebraahimi rezaebraahimi at yahoo.com
Wed Jun 16 21:20:35 CEST 2010

Hello everyone
I have a question, i wonder what is the physics behind the flatterning of the acoustic and optical phonon branches in some specific directions of the 1st Brillouin zone of some of the crystals? 
Thanks for any comment

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20100616/3b2d2eb3/attachment.html>

More information about the users mailing list