[Pw_forum] Negative Polarization !!!

[Mojtaba Mirseraji]

Dear All

If we have a negative total polarization (by nscf+lberry),has it meaning?
This happens, for example, in strain study of tetragonal perovskites.
if it has meaning, what does it mean, physically?
I have some problem with negative polarization !!!!

Regards

Mojtaba Mirseraji
Ph.D. Candidate
Theoretical Condensed Matter Physics
Arak University
I.R.IRAN