[CP2K-user] external electric field on slab system

[Matt W]

They are the parameters (PARAMETERS) with values (VALUES) specified in the 
input section.

On Saturday, April 25, 2020 at 3:55:20 AM UTC+1, RUPESH TIWARI wrote:
>
> Dear Laura Hao,
>                             Can you please tell me, what is A and B here?
>
> On Friday, February 7, 2020 at 7:34:20 AM UTC+5:30, Laura Hao wrote:
>>
>> Dear all,
>>
>> I am trying to apply an external z-direction electric field on a slab 
>> system which is periodic on XY direction and non-periodic on Z direction. 
>> Could I use the following command?
>>
>>
>> &EXTERNAL_POTENTIAL
>>       FUNCTION (A/B)*Z
>>       VALUES [eV] 0.2 [angstrom] 1.0
>>       PARAMETERS A B
>>     &END EXTERNAL_POTENTIAL
>>
>>
>> Sincerely
>> Laura
>>
>
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