Dear Zahra,
--- On Tue, 10/7/08, zahra sadat naghavi <szs_naghavi at yahoo.com> wrote:
> I run ph.x for a grid of qs and there is not any > negative freqency but as I
> run matdyn.x they emerg what > should I do?
Can you submit the picture?
In my experience this might happen due to insufficient number of dynamical
matrices.
Bests,
Eyvaz.
-------------------------------------------------------------------
Prof. Eyvaz Isaev,
Theoretical Physics Department, Moscow State Institute of Steel & Alloys,
Russia,
Department of Physics, Chemistry, and Biology (IFM), Linkoping University,
Sweden
Condensed Matter Theory Group, Uppsala University, Sweden
Eyvaz.Isaev at fysik.uu.se, isaev at ifm.liu.se, eyvaz_isaev at yahoo.com
