<div dir="ltr">Then I can use the atomic positions given in the output for scf calculation??<br>
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</div><div class="wps_signature">Sent from my Mi phone</div><div class="wps_quotion">On Paolo Giannozzi <p.giannozzi@gmail.com>, Apr 21, 2017 2:27 PM wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p></p><p dir="ltr">On Thu, Apr 20, 2017 at 11:57 AM, Ubaid Mohd <<a href="mailto:onlymubaid@gmail.com">onlymubaid@gmail.com</a>> wrote:
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<br>
> I am running the relax calculation for silver graphene interface. After
<br>
> calculation my atomic positions was completely changed.
<br>
> [...] Is it right?
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<br>
it is the expected behavior. Likely, your system is a layered system,
<br>
bound by van der Waals forces. Simple GGA does not account for van der
<br>
Waals forces so the layers are not bound.
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<br>
Paolo
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<br>
--
<br>
Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
<br>
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
<br>
Phone +39-0432-558216, fax +39-0432-558222
<br>
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