[Pw_forum] how to define celldm(4) or cos(ab) for monoclinic system.

[stefano de gironcoli]

sorry but I don't really know what ubiqueb would be.
i doubt it is a quantum espresso input parameter.
stefano

On 30/06/2016 18:34, Lori 91 wrote:
> Thanks a lot Stefano but in My caluclation with space group 15 must I 
> put ubiqueb=.true.???
> Thanks a lot
>
> Inviato da iPhone
>
> Il giorno 30 giu 2016, alle ore 18:25, Stefano de Gironcoli 
> <degironc at sissa.it <mailto:degironc at sissa.it>> ha scritto:
>
>> The code assumes that the non-right angle is gamma= the angle between 
>> a and b axes.
>> Hence A=6.63.. B=21.09.. C=6.10.. cosab=cos(115.39..)
>>
>> stefano
>> (sent from my phone)
>>
>> On 30 Jun 2016, at 18:05, Lorenzo Donà <lorechimica91 at hotmail.it 
>> <mailto:lorechimica91 at hotmail.it>> wrote:
>>
>>> Dear all I really hate no idea how to define cilldm(4) or cosab I 
>>> have searched in pw.x mail archive and red the pw.x input 
>>> documentations but really i don’t understand how to define it.
>>> I have a system with this lattice parameters:
>>>       A           B           C ALPHA        BETA       GAMMA
>>>     21.09173     6.10720     6.63605 90.00000   115.39358    90.00000
>>> Excuse for the really stupid question but i really don’t understand.
>>> Thanks a lot
>>> dearly
>>> lorenzo
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