[Pw_forum] LO-TO splitting in dynmat.x

[xirainbow]

Dear Huang:
I think you are right;)
Thanks a lot :P



On Fri, Apr 29, 2011 at 11:50 AM, lfhuang <lfhuang at theory.issp.ac.cn> wrote:

>  Dear Wang:
>
> > LO-TO splitting always exists in Brillouin zone, but two points are worth
>
> > > noting:
> > >
> > I do not think so. I do not find any LO-TO splitting at the X and R point
> of
> > Brillouin zone of cubic.
>
> This could depend on the definition of "LO-TO splitting", which I meant
> "the reduction of the LO-TO degeneracy".
> If it is defined to be the splitting due to the long-range electric force
> on LO, it will disappear in BZ zone.
>
> Best Wishes!
> Yours Sincerely
> L. F. Huang
> ------
> ======================================================================
> L.F.Huang(黄良锋) DFT and phonon physics
> ======================================================================
> Add: Research Laboratory for Computational Materials Sciences,
> Instutue of Solid State Physics,the Chinese Academy of Sciences,
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-- 
____________________________________
Hui Wang
School of physics, Fudan University, Shanghai, China
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