[Pw_forum] a question about electron-phonon coupling

[li quan]

Dear Polo,
  I tried reducing the value of eps, but the result of lambda(q,mu) is still
zero.(q is not the center of Brillouin zone). So I do not know why, but I
still want to get the value of lamba(q,mu). Please tell me how to do?
 Best wishes!
                                                                       gao
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