Dear Dr Dingfu Shao
Thanks so much for responding me!!!!!!!
I don't use plotphon because before, i ploted my dispersion curves in the Zinc
Blende structure using origin, and i havent this kind of problem that i
mentionned in my firts message and which appears when using the wurtzite
structure, thus this leads me to try plotphon where i consider its use only for
verification. I don't know if i'am right or no???
Regards.
Nh Ben
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