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.
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