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Hi Everybody,
I am a new VASP user. I want to calculate the effect of high pressure on Ni nanotube.That means I have to give the desired pressure in PSTRESS-tag in the INCAR file. But I have seen a line "External perssure=23 Kb". I am giving an external pressure in the INCAR file but at the same time I am getting an different external pressure in the outcar file. Even when no pressure is given to the INCAR file that means PSTRESS=0 by defalt I am getting an external pressure.
Any suggestion would be accepted.

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