[Pw_forum] crossing of phonon branches

[Eyvaz Isaev]

Hi,

Well, what is the problem? Is it for a known system? Why do you  think they 
should cross? 

Anyway, go to PlotPhon in QE (4.2) and try it. 

Bests,
Eyvaz
-------------------------------------------------------------------
Prof. Eyvaz Isaev, 
Department of Physics, Chemistry, and Biology (IFM), Linkoping University, 
Sweden 

Theoretical Physics Department, Moscow State Institute of Steel & Alloys, 
Russia, 

isaev at ifm.liu.se, eyvaz_isaev at yahoo.com




________________________________
From: mayank gupta <mayankaditya at gmail.com>
To: pw_forum at pwscf.org
Sent: Fri, August 27, 2010 10:53:04 AM
Subject: [Pw_forum] crossing of phonon branches

Hi
In the phonon calculation the after matdyn.x run, we got the phonon
frequency but they are not in correct order, I mean at different q
point the phonon branches are crossing each other.

Mayank BHU(INDIA)
_______________________________________________
Pw_forum mailing list
Pw_forum at pwscf.org
http://www.democritos.it/mailman/listinfo/pw_forum



      
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20100827/639c52c7/attachment.html>