Hi
I have performed an LDA+U calculation for my case, seems to be OK(with a
noticable improvement in the band gap). But when i tried to perform phonon
calculation, it converged to meaningless figures(containing a lot of minus
ones) that are not comparable to the LDA. The structure is relatively relaxed
due to the forces and stresses(that should be reasonable, as I have used
U_Progection_type=atomic)
Is there anything i should concern?
sorry for the basic question!
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