[Pw_forum] Can I use resluts of gamma point to calculate the phonon dispersion curve?

Peng Tao ptao10b at imr.ac.cn
Tue Sep 24 03:19:38 CEST 2013

Dear all,

I have calculated the phonon frequencies of gamma point before, and now I'm planning to
calculate its phonon dispersion curve. Can I use the results of gamma point? If not, phonon
of the gamma point needs to be recalculated, which is really a waste of time.

My system is quite large and one-dimensional, so the gamma point is exclusively important.
If it is possible to make use of previous results, plenty of time will be saved.

Thank you very much!

Warmest regards,
Peng Tao

PH.D. candidate Peng Tao 
Magnetism and Magnetic Materials Division
National Laboratory for Material Science
Institute of Metal Research, Chinese Academy of Sciences
Phone  +86-024-83978751

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