[Pw_forum] negative frequency in high q-mesh

[Suza W]

Dear Dr. Wei-Bing Zhang,

Do you get the same sort of problem for both low-buckled (LB), and
high-buckled (HB) structure ?
How look the curves for q-mesh (8, 8, 1) and (12, 12, 1) ? One needs to be
sure that the kinks in
the dispersion curves are not artifact. I would like to see the curves for
q-mesh (8, 8, 1) and (12, 12, 1).
A proper conclusion needs complete details.

Cheers!!!!!
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