Fixed atoms are moving!

Queries about input and output files, running specific calculations, etc.


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musanna_galib
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Fixed atoms are moving!

#1 Post by musanna_galib » Sat Apr 23, 2022 5:02 am

Hi,

I am trying to relax a surface However, the free, as well as fixed atoms, are moving significantly. Also got an error message - Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

I am adding the files here.

Regards,
MG
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MG

merzuk.kaltak
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Re: Fixed atoms are moving!

#2 Post by merzuk.kaltak » Mon Apr 25, 2022 7:21 am

Dear MG,

You probably want to set ISIF to some other value.
Note, ISIF=3 allows for changes in the volume and cell shape, i.e. you allow for changes of the Bravais lattice.
Selective Dynamics, just freezes the position with respect to the Bravais lattice.
Guessing from your question, I assume you want to set ISIF=2 (default value).
Also, following tutorial might be interesting for you:

wiki/index.php/Surface_Science_-_Tutorial

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