Dear Prof. P. Blaha, In your paper, PRB-63-165205(2001), you say that external potential 100mRy corresponds to 700 kV/mm. When I tried to get this unit transformation, I was confused by something. The following is my problem. -------------------------------------------------- c=8*sqrt(3)*a0 a0=5.65 Angs Efield= 0.1Ry/c=0.1*13.6V/(8*sqrt(3)*a0)= 173 kV/mm --------------------------------------------------
I cannot get 700 kV/mm. Can you tell me what's wrong with myself? Thank you very much. Best wishes, Sincerely, Yong-Hong Zhao