Two things:

1) In your fdf file, the line that reads

AtomicCoordinatesFormatFractional

should read

AtomicCoordinatesFormat    Fractional

instead. SIESTA is assuming that the coordinates are given in Bohr,
since it does not recgnize "AtomicCoordinatesFormatFractional" as a
keyword. This is one reason why forces and pressure are so high: the
atoms want to expand.


2) Your basis set contains a net atomic charge... is this correct?

Marcos


On Wed, 2005-04-13 at 13:54, navaratnarajah kuganathan wrote:
> Dear Prof
>
> I am now doing calculation on graphite.I am herewith attaching my
> output file .I observe the value of forces and pressure  is high.Could
> you please anyone help in this regard.
>
> Sincerely
> Kuganathan
>
>
> ______________________________________________________________________
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--
Dr. Marcos Veríssimo Alves
Departamento de Física
Universidade Federal de São Carlos
São Carlos, SP - Brasil
http://joselitosn.df.ufscar.br/~dm/equipe/verissim.htm
***********************************
Dr. Marcos Verissimo Alves
Physics Department
Universidade Federal de Sao Carlos
Sao Carlos, SP - Brazil
http://joselitosn.df.ufscar.br/~dm/equipe/verissim-en.htm


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