[Pw_forum] general external potential

Aihua Zhang zah7903 at gmail.com
Fri Apr 17 15:20:33 CEST 2009

Dear PWscf users,

I am thinking about adding a general periodic local potential to my system.
I noted that for the specific sawlike potential (tefield), the total energy
correction (etotefield) and the force correction (forcefield) are needed in
pwscf code. I wonder how to generalize these two terms for a general local
potential? Could anyone give me a clue? Thank you!

Best regards


Research Fellow,
Dept. of Physics, National Univ. of Singapore
10 Kent Ridge Crescent, Singapore, 119260
Tel: +65 6516 7844
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