Dear Quantum Espresso's team. I am trying to obtain the oscillator strenght matrix element <n,k| exp(i(q+K)·r) |l,k+q> when q->0 using ultrasoft pseudopotentials, but I can not obtain the term [Vnl,r] because I do not know how to extract this information from the calculations . The question is: ¿Where can I find the information about the non-local part of the pseudopotential from calculations using Quantum Espresso? or ¿Can I obtain this information directly from the .UPF file?
Best regards, M. Sc. Pábel Machado
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