[Pw_forum] Berry phase in wave function

[pourya at flex.phys.tohoku.ac.jp]

Dear all

Hi

I would like to include Berry phase in calculation of wavefunction of
graphene but it seems I cannot to it by   lberry=.true.
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     Error in routine iosys (1):
     Berry Phase/electric fields only for insulators!
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

is there any possibility to include geometry phase or Berry phase in
wavefunction when I calculate graphene wavefunction.

Best Regard,

P.Ayria

PhD student Japan
Tohoku university