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Hi,
I found the unit of EFIELD in VASP is eV/A;however,in many papers,the the unit of EFIELD is V/A. What is the difference between the two units?
In addition.can VASP be used to calculate polarization change of a system ?and,how to set in INCAR ?

Cf. e.g. the tread:
http://cms.mpi.univie.ac.at/vasp-forum/ ... c.php?4.90

Thank you for your reply，But I think E = F / q
The force on an electron charge （-e）
eV/A = -V/A instead of
eV/A = V/A.
right?