[Pw_forum] LO-TO splitting in dynmat.x
nkxirainbow at gmail.com
Fri Apr 29 06:53:51 CEST 2011
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?
School of physics, Fudan University, Shanghai, China
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