[Pw_forum] Lo-To spliting

[Eyvaz Isaev]

Dear Liu,

In order to get LO-TO splitting you have to calculate phonons at the Gamma point (why?) and then apply dynmat.x.

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


--- On Thu, 8/20/09, liu hanyu <ouuing at gmail.com> wrote:

> From: liu hanyu <ouuing at gmail.com>
> Subject: [Pw_forum] Lo-To spliting
> To: Pw_forum at pwscf.org
> Date: Thursday, August 20, 2009, 1:07 PM
> hello:
>     i  want to ask a question
> that   I want to calculate Lo-To
> spliting whether or not I only calculate the G
> point frequency. can that get result what i want ?
>   thank you !
> 
> -- 
> -=*=-=*=-=*=-=*=-=*=-=*=-=*=-=*=-=**=-=**=-=**=-=*=-=*=-=*=-=*=-=*=-
>  Hanyu Liu(刘寒雨),
>  MS.
>  State key  Laboratory of Superhard Materials, Jilin
> University, China
>  Email: ouuing at email.jlu.edu.cn 
>     ouuing at gmail.com
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