[Pw_forum] saw like potential

[Stefano de Gironcoli]

eamp is a measure of the additional electric field, you are talking of a 
potential energy difference..
you need to know/decide across which distance you want this potential 
drop to occur and define the electric field accordingly.

stefano de Gironcoli

On 03/25/2011 12:47 PM, vinoth r wrote:
> Dear friends,
>
> i had one query.
>
> i need to apply 1.4V saw like potential.
> for eamp description given as
>
> Amplitude of the electric field in ***hartree***a.u;
> 1 a.u=51.4220632*10^10 v/m;
>
> i need to apply 1.4 voltage means how to convert in to ***hartree***a.u;
> i applied eamp = 2.72256676e-12 ,for 1.4 voltage.*i used all my units in a.u
> *;
>
> with this i attached my input file also.
>
> Thanks in advance
>
>
>
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