[Pw_forum] Unit of potential grids ?

lan haiping lanhaiping at gmail.com
Tue Sep 9 05:56:41 CEST 2008


Dear  All:

   I have  a confusion about the unit of potential grids.
   In my test calculations, i applied a external electric field by a dipole
layer at vacuum slab.  But i found the output result seems not very
consistent with my settings. For example, I add a 0.1 V/Ang field along
Z-direction,while the result that pp.x gives to me is 0.2 V/Ang if I assume
that the unit of potential grids is just atomic unit .

Would you please help me clarify this point ?

Best ,

Hai-Ping


-- 
Hai-Ping Lan
Department of Electronics ,
Peking University , Bejing, 100871
lanhaiping at gmail.com, hplan at pku.edu.cn
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