Hi,
Thank you very much for your help, let me know more about this problem. But in accordance with your script when the implementation of the following problems. 1.graphene in the Vibration Visualizer TO mode needs to flip the unit cell position and PHYSICAL REVIEW B 93, 035414 (2016) in the FIG. 4. (d) consistent, this flip and the article described in the phonon vibration Is the pattern TO consistent? 2. In the simulation of Mos2, according to your ideas' these two models can form a linear combination, because they are equal at the Gamma point. ', In addition to the ZO2 model results are different, the other results are consistent, is not where the parameters set? see attached. 3. I have also learned how the electro-acoustic coupling energy, the Fermi speed, and the speed of sound are accurately calculated in the study of PHYSICAL REVIEW B 93, 035414 (2016), and whether there is a relevant script file sharing?