[Pw_forum] LO-TO splitting in dynmat.x

xirainbow nkxirainbow at gmail.com
Fri Apr 29 06:53:51 CEST 2011

Dear Huang:

This could depend on the definition of "LO-TO splitting", which I meant "the
> reduction of the LO-TO degeneracy".

I still have another question  :)
 Suppose a uniaxial crystal(no cubic): c>a=b. Suppose there is a
double-degenerate polar E_u mode, in which all atoms move in the a-b plane.
If the wavevector around Gamma point is in the a-b plane, the degenerate E
mode will split into LO and TO mode.
Am I right?

Hui Wang
School of physics, Fudan University, Shanghai, China
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20110429/4eb8746d/attachment.html>

More information about the users mailing list